!"#$%&'()*"$+,." /"!!"*
!""#$"%&'()*"+",'#-()&*"'!.0" "++"*1
2"#.%03
4#$"%&%*& "+",'#-()&*"'!.0"# "++"* (!' "!*"( 56"!7890#"*7:;.'"( <=#!->"*? *)0 >"(
@A%.07A%++B72"#.'C#,"#D#!*$!DEF"#:"*>"#!.'."+G.'"##"&'3
4!*" $%HC++!&" 4##"&%*& >". 4!*&)*&.,#"!.". <$6!.0"* I)'0->" %*> J!''"#? G#!*&' >"* )G&"7
.'!(('"*K%.&)*&.,#"!.<K*->"*,#"!.?$%(:06!*&"*E
!!"#$%&'()*+ ,-&$-."&/-'-&0120351#0%&'67%3587%##9
!" #$%%$&'%$(*+&' ,-. $(& (/01.02$/3 *040'$&$/ 5$6(+4
4(1
σ = 0
34(5%-6%'(+1'%'%-7+8*,%$'%9
B ~ = µ · H; ~ D ~ = ε · E; ~ ρ = 0; ~j = 0
: ";<=+*.'$+8'%-5.%>+?@%$$,$%.18-,%-9
∇ × ~ H ~ = ε · E ~ ˙
: "A<∇ × ~ E ~ = − µ · H ~ ˙
: " <∇ · ~ H ~ = 0
: "B<∇ · ~ E ~ = 0
: "C<D8/E$%.18-,:F"A<%(,.6'/.16%.D-@%-58-,G)-
∂
∂t
∇ × ~ H ~ ˙ = ε · E. ~ ¨
: "F<D8/E$%.18-,:F" <%(,.6'/.16%.D-@%-58-,G)-
( ∇× ~ )
∇ × ~ ∇ × ~ E ~ = − µ · ∇ × ~ H. ~ ˙
: "H<I*J)(*8-,9
∇ × ~ ∇ × ~ E ~ = ∇ ~ ( ∇ · ~ E) ~
| {z }
!"#$%!&#'#()
− ∆ E ~
: "K<I-'%(L%(@%-58-, G)-:F"F<$+8'%'E$%.18-,:F"H</1$.%M$.1
∆ E ~ = µε E. ~ ¨
: "N<#6%-/)%(1O$'*+-58(1D-@%-58-,G)-
( ∇× ~ )
+8JE$%.18-,:F"A<8-5G)-∂
∂t
+8JE$%.18-,
:F" <
∆ H ~ = µε H. ~ ¨
: ";!<=.%//.-55.%2%$$%-,$%.18-,%-J4(
E ~
8-5H ~
"!7 8$%69$:($*+&'$& (4 8;%% $9$&$. #$%%$&
#.-+$$,%*%.-%(D-/+'PJ4(%6%-%2%$$%-G)-$.-&/-+1(%1'//)@.%G)-(%1'/-+1$.-&/%-'$+-,
5%(?QD1/%$+8'%'9
U = f t − x
v + g
t + x v
: ";;<
U
%(J4$$'5+6%. 5.%2%$$%-,$%.18-,∆U = 1
v 2 · U . ¨
: ";A<3$4$)56
7$)
f ′ = ∂f
∂ t − x v
∂f
∂x = f ′ · ∂ t − x v
∂x = − 1 v · f ′
∂ 2 f
∂x 2 = v 1 2 · f ′′
∂ 2 f
∂t 2 = f ′′
→ ∂ 2 f
∂x 2 = 1
v 2 · f; ¨
8,/9%-:;0g t + x
v
< !2 =
>),?$0-%$)*.)AB%$)*+,-<C!D=E<C!2F=$0-)'A:;0&)$G*/5$,-$5*4),&)-H$)A&$0$%$HA09./-,$I
A)5*$,1$%%$6
v = (ε · µ) − 1 2
< !2J=K)$ B%$)*+,-$, <C!"= +,& <C! = 5),& ,+0 (+ $0:;%%$,E 4$,, &)$ #$%&0)*A+,-$, 5$,H0$*A (+0
8+5'0$)A+,-50)*A+,-&$01$%%$90)$,A)$0A5),&!
3$)5L)$%6 >'$,$ 1$%%$ .)A #0$M+$,(
ω
N9, %),H5 ,/* 0$*A5! K)$ 1$%%$ 5$) ), O)*A+,-y
%),$/0L9%/0)5)$0A!
E y = E ◦,y · e i(wt−kx)
< !2P=.)A
w = v · k; E x = E z = 0.
< !2C=8+5
∇ · ~ E ~ = 0
:9%-A&/,,∂E x
∂x + ∂E y
∂y + ∂E z
∂z = 0
< !2Q=K/.)A-)%A:;0+,5$0$,#/%%6
E y (y) = const;
(+-$-!x, z, t
).-$5/.A$,O/+.! < !2R=1)$)5A&/,,
H ~
90)$,A)$0AE+,&4)$%/+A$A&)$G*/5$,'$()$*+,-0$%/A)N(+.E ~
I#$%&SK$0T+5/.I.$,*/,-$0-)'A5)*/+5&$.U,&+HA)9,5-$5$A(EB%$)*+,-<C! =6
∇ × ~ E ~ = − µ · H. ~ ˙
< !2D=#;0&)$$'$,$1$%%$
E y (x, t)
N$05*4),&$,'(-%!∇ × ~ E ~
5949*%&)$x
E/%5/+*&)$VIW9.L9,$,A$!#;0&)$
z
IW9.L9,$,A$$0-)'A5)*( ∇ × ~ E) ~ z = ∂E y
∂x − ∂E x
∂y = ∂E y
∂x =
= E ◦,y ( − ik)e i(wt−kx) = − µ · ∂H z
∂t
< !"F=T$)A%)*$U,A$-0/A)9,%)$:$0A5*%)$X%)*6
ik Z
E ◦,y e i(wt−kx) dt = µ
Z H ˙ z (x)dt
E ◦,y · ik
iw e i(wt−kx) = µH z (x, t)
→ H z (x, t) = 1
µ · v · E y (x, t).
< !"2=4,0 2&/5(6
E ~
7.8H ~
9:&%8 0(&2&. 0&.'()&2(,7;&/.,.8&)7.8 0/.8/. <2,0&6;,%%0µ
7.8ε
)&&%%0/.8 =>-%" ?,@" A" "BC" D/( E%&/27.- =A"BFC7.8 +/(
µ = µ ◦ µ r , ε = ε ◦ ε r
&)-/G( 0/2 ;H) 8/&I&)'.H@;7.-8&):&%8,+@%/(78&.
H z (x, t) = r ε ◦
µ ◦ · r ε r
µ r · E y (x, t).
= "!!C4&J./(/*.8&0:&%8K&%%&.K/8&)0(,.80L
Z = E y H z
= r µ ◦
ε ◦ · r µ r
ε r
= "! C
M+I,'77+L
Z ◦ = r µ ◦
ε ◦
= 377Ω
= "!FC!!"#$%&'()*+,-".&/".-%&' 01&
E ~
%&$H ~
23-."&..!.&.4.##."& 567"9/%&'! "#$%$ &$''$% (% )$*'+,-#$./0-$-$% 1$2($%
! !" #$%&'()*$+,-)$)$ .$%/0))010)2) *34!5'67 .$%/$,*0&0)2)8
σ = 0
M.2*2;)&N7&.(&.3&20&%;&%8&).()/((&/.&;)&N7&.O,G2P.-/-&<2,0&.>&)02/&G7.-OK/02&.<*9
%,)/0,(/*.
P ~
7.8E ~
GOK" OK/02&. D,-.&(/0/&)7.-M ~
7.8H ~
,7;"P ~
7.8M ~
&/%&. .,2 =Q&%,9 R,(/*.C"M. 8&)SP2&>*.Q&0*.,.O&.=O"T" 4/@*%02K/.-7.->*. D*%&'H%&.6M*.&.70K""""C /0(8/& :)&N7&.O,G2P.-/-'&/(G&0*.8&)0 ,70-&@)P-(=>-%"7.(&.0(&2&.8&UGG/%87.-C"M+ :,%%0/.709
;V)+/-&)$))&-7.-',..+,.'*+@%&R&
ε r
7.8µ r
G/%8&.LD ~ = ε ◦ E ~ + P ~ = ε ◦ ε r E; ~
+/(ε r = ε ′ − iε ′′
B ~ = µ ◦
H ~ + M ~
= µ ◦ µ r H; ~
+/(µ r = µ ′ − iµ ′′
= "!WC!!"#$%&'()(* !+,&'"'-."/.&01&
ε ′
%&$ε ′′
"& $.234'.!%&'."&.2!2."/.& !56) 7+49#.&:.;71&9&5!."
f r
!!"#$%&'()<*=."7>".#?@2$". !+,&'"'-."/$.7:.9#/."#7
α
$.2A1#92"7".2!92-."/01&$.2B2.C%.&5 DA1#92"7".2!92-."/α
."&.7 E1#.-@#7!56) /147*~ p = α · E ~
F)!"#$"%&'()*%+,+-",. /"! 012'!,3,"!('!-",.4 #$'2,.'.,5
4+5/&6708/)'7.-'*+9%&:&)
ε r , µ r
;77.(&)072&.<=&)8&.5&.8/)0(,((>%&/27.-?@"ABCDE)E y
5&.6.0,(;FE y = E ◦,y · e iωt−γx
? "G@C$/.0&(;&./.5/&3&%%&.-%&/27.-?@"HC&)-/I(
∂ 2 E y
∂x 2 = γ 2 E y = − εµω 2 E y
γ 2 = − µεω 2 = − µ ◦ ε ◦ ω 2 (µ ′ − iµ ′′ )(ε ′ − iε ′′ )
J&(;&
γ = α + iβ;
5,..&)-/I(0/2α = ω
c 1
2 [ | ε r | · | µ r | − (µ ′ ε ′ − µ ′′ ε ′′ )]
1 2
β = ω c
1
2 [ | ε r | · | µ r | + (µ ′ ε ′ − µ ′′ ε ′′ )]
1 2
.
? "GKCL&/09/&%FME)
µ ′′ = ε ′′ = 0
&)-/I(0/2α = 0
→
N&/.&OP+9D7.-β = ω c
p µ ′ ε ′ .
? "GQC→
&.(09)/2(k
.,2?@"A!<@"ABCDE))&&%%&µ, ε
"O,+/(&)-/I(0/2/+,%%-+&/.&.M,%%5/&-&5P+9D(&3&%%&
E y (x, t) = E ◦,y · e i(ωt−βx) · e −αx .
? "GHC6+9%/(75&.=&)%,7DF
| E y (x) | = | E y (0) | · e −αx
+/(
α = − 1 x ln
E y (x) E y (0)
.
? " #Cα
2,( 5/& $/.2&/(N p/m
?R&9&) 9)*S&(&)C" >&I)P72%/2&) /0( 5/& 6.-,I& 5&) OP+9D7.- /.db/m
?O&;/I&%9)*S&(&)C&.(09)&2&.55&)O&T./(/*.α ′ = − 1
x · 20 · log 10
E y (x) E y (0)
.
? " ACE y
7.5H z
0/.5-&+PU>%&/27.-?@"G CEI&)5&.M&%58&%%&.8/5&)0(,.5=&)'.E9D(FZ = E y
H z = Z ◦ ·
r µ ′ − iµ ′′
ε ′ − iε ′′
? " GC5"2"<
E y
7.5H z
0/.5-&-&.&/.,.5&)92,0&.=&)02*I&.<,7U&)8&..-/%(Fµ ′′
µ ′ = ε ′′
ε ′
?-%&/2&V&)%70(8/.'&%tgδ
C ? " C! !" #$%%$&'()*+$,-(&. *$, $&/%,1$+ 2$,-341,.5$,-
σ
45*2($#$-*/.-$-$%7-89$:$'-$2/,;.<,.$=$,$->?
~j = σ · E ~
@ ! ABC/<(-D%2$*-,(.='$(.+%:@E!FB>+
∇ × ~ H ~ = ε · E ~ ˙ + σ · E. ~
@ ! 3BC($='$(.+%:$%@E! GE!3B:$'-$%H$(-$*.(%+%)$*D%2$*-!C($,05.*->+?
∆ E ~ = µε E ~ ¨ + µσ · E ~ ˙
@ ! EB∆ H ~ = µε H ~ ¨
| {z }
!""!#$"$%
+µσ · H ~ ˙
| {z }
&'()*+(,#+-#.!("/
I$*:'$(.$F!4(J,.$,=$,$->(%2$*K.$*<82L%/<(J?
∆K = 1 D · ∂K
∂t
@ ! MB<(-
K =
N8%>$%-*/-(8%, D =
C(9+,(8%,J8$O>($%-"(%,$->$%2$,P%,/->$,
E y = E ◦,y · e iωt−γx
05*$(%$$#$%$Q'(%!R8'!&$''$(%@E! EB$*:(#-γ 2 = − µω 2
ε − i σ ω
.
@ ! SBT#$*2/,U%2+J-(8%,:$,$->#$J8<<-</%05*
Z
?Z = E y
H z
= iωµ
γ ;
+%2<(-@E! SB?Z =
r µ
ε − iσ ω ;
@ ! VBW$( $(%$* :$:$#$%$% 4*$X+$%>
ω
J/%% /',8 $(%0/.ε σ
◦ ω
>+< (</:(%D*$% P%-$('ε ′′ (ω)
/22($*-H$*2$%Q+<2($ &$''$%/+,#*$(-+%: >+#$,.*$(#$%! C$*4*$X+$%>:/%:
ε ′′ (ω)
(,-/#$*)Y''(: )$*G,.($2$%)8<Z$(-+%:,/%-$('!
! ! 6$-'%%$ (&/ 75,&$8$5-$
&(* #$-*/.-$% 2($ P+,#*$(-+%: $(%$* '(%$/* R8'/*(,($*-$%Q $#$%$% &$''$ (% $(%$< [/'#*/+<Q
#$:*$%>-2+*.$(%$1$-/''R'/--$!
!!"#$%&'()*+ ,-$.01-20#-"3-&
S 1
%&$S 2
4%56-5-0&%&' $-728"&-9-817)$/-&.02,4(&.5&)+&(,%%/02&.3,.56
78)&%&'()/02&7&%5'*+9*.&.(&.9,),%%&%:;)<&(,%%*=&)>?2&-/%(
E k = ρ · j k
@ "A#BC,=&//0(
ρ
5&)09&:/D02&&%&'()/02&3/5&)0(,.5"E;4-);.55&0'%&/.&.ρ
&)-/=(0/25,..E k
E ◦ −→ 0; H ⊥
H ◦ −→ 0.
@ "AFB@G-"/.5;:/&)(&)3/)=&%0()H+&I
U i = − φ ˙ → 0
BE.5&)&)0&/(0J&)%,.-&.5/&K(&(/-'&/(0=&5/.-;.-&.5/&K(&(/-'&/(J*.
E k
;.5H k
,.5&)<&(,%%L*=&)>?2&"
C,+/( 0(&2( /. -;(&) M?2&);.- ,. +&(,%%/02&. N=&)>?2&.
E ~
0&.')&2( ,;4 5&) +&(,%%/L 02&.3,.5IH ~
9,),%%&%:;)3,.5*=&)>?2&"C,0 7&%5J&)2,%(&. /. 5&) N=&)>?2&.02/2( ',.. 5;)2 E.G&.5;.- 5&0 O.5;'(/*.0-&0&(L
:&0 ,;4K2%&/4&
S 2
=:G" 5&0 C;)2>;(;.-0-&0&(:&0 ,;4K2%&/4&S 1
&)+/((&%( G&)5&.I G*=&/dy
4.'$(0$
S 1
6∇ × ~ H ~ = ~j +
! ∂ ~ D
∂t
"
| {z }
! !"#$!%
~j
&'(!%")+,-../ !"→ I
S1
Hd~s ~ = I;
H z (y + dy)dz − H z (y)dz = j x (y) · dydz
→ ∂H z (y)
∂y = j x (y)
7 !89:4.'$(0$
S 2
6I
S2
Ed~s ~ = − ∂φ S2
∂t
dΦ S2 = B z (y) · dydx;
;(-B z (y) = µ ◦ µ r H z (y)
− E x (y + dy)dx + E x (y) · dx = − ∂B z (y, t)
∂t dydx
→ ∂E x (y)
∂y = µ ◦ µ r
∂H z (y, t)
∂t
7 !8 :<%,/-=0>*
H z (y, t)
(;1$-/''6H z (y, t) = H z (y) · e iωt
7 !88:?($@AA*2(%/-$
x
7<+,#*$(-+%B,*(.-+%B:C(*20$,-B$./'-$%!"(%B$,$-=-(%7D!8 :+%2;(-E x (y) = ρ · j x (y)
$*B(#-,(.∂j x (y)
∂y = iωµ ◦ µ r
ρ · H z (y).
7 !8E:F/.
y
2(G$*$%=($*-+%2;(-H'$(.+%B7D!89:$*.I'-;/%,.'($J'(.∂ 2 j x (y)
∂y 2 − iωµ ◦ µ r
ρ j x (y) = 0.
7 !8D:?($/''B;$(%$KL,+%B'/+-$-6
j x (y) = j x (0) · e −
q iωµ◦µr ρ ·y
( + ˆ j x (0) · e +
q iωµ◦µr ρ ·y
)
7 !83:ˆ j x (0)
+%22/;(-2$*$(%B$M'/;;$*-$<+,2*+M;>,,$%F+'',$(%C$B$%2$*)$*'/%B-$%"%2'(.M$(- )A%j x (y)
0>*j → ∞
!<+0-*$%%$%)A%N;/B(%I*O+%2P$/'-$(';(-√ i = r 1
2 + i r 1
2
$*B(#-7 !8Q:
j x (y) = j x (0) · e − y δ · e −i y δ
7 !8R:+/(
δ = r 2ρ
ωµ ◦ µ r ;
!"#$"%&% 4 "5#6'%"()"%*+
ρ Cu,300K = 1.7 · 10 −8 Ωm
f = 100M Hz; µ ◦ = 4π · 10 −7 ; µ r = 1
→ δ = 6.6 · 10 −6 m = 6.6 µm.
4 "5768/(9%&/2:.-4;"<=6&)-/>(0/2?:)2@.(&-),(/*.
H z (y) = − δ
1 + i j x (y).
4 "5=6A,02&/B(C
H
DE&%?:.?F()*+?/2(&0/.?>&/&/.&)G/&H&y
/+8&(,%%I&J&/%045 ◦
,:B&)K2,0&"L:H-):.??&0M2+02&.9&0&(N&00/.??,-&-&.
E x (y)
:.?j x (y)
I&J&/%0-%&/2O2,0/-"FO&N/&%%,.?&)P&/(&)*>&)QR2&-/%(S
H o , z = H z (0) = − δ
1 + i j x (0).
4 "5 6E*)(HT2):.-?&0*>/-&.'%"()"%*(HT)&/.&,-)&%./0#1S 3/&/0(?,0U&)2R%(./0
E x (0)/E y (0)
VE x (0) = ρ · j x (0) = − (1+i) δ · ρ · H z (0)
| E x (0) | = √ ρωµ ◦ µ r | H z (0) |
ET)
f = 100M Hz :
4 "5<6
| E x (0) | ≃ 3.66 · 10 −3 | H z (0) | E y (0) = 377Ω · H z (0)
| E x (0) |
E y (0) ≃ 10 −5
4 "556A,02&/B(C?/&*>/-&L..,2+&
E k
E o → 0
/0(/.-:(&)WR2&):.-&)HT%%("23-"40*%#$% 5%"$(7"7$1"!%
δ
+X+ ?&. M2+02&. 3/?&)0(,.? ?&) +&(,%%/02&. 3,.? :.? ?,+/( ?/& 3,.?Y&)%:0(& &/.H,2
>&)&2.&.N:'Z..&.CY&)J&.?&(+,.H*%-&.?&0$)0,(N+*?&%%S
!!"#$%&' ()*+ ,-./0123$4## 1%- ,-2"00#%&' $4- 5378-49%4&1:4-#%.0#4".0%&' ;-3 ,"&74"0.<=74
/&>4"04-3!4-<=74&)
4/,"*,/-5672$''#$,.*$(#-*$.-9$%/+2($-/-,:.'(./%0/''$%2$%;.6,.$%<$*'+,-$,7=($
2$% !"#$%&'() >
I x ′ = Z ∞
y=0
j x (y)dy = δ
1 + i j x (0)
? !@AB= − H z (0)
? !@CB#$( <$*=$%2+%9 2$* D'$(.+%9$% ?A!E3B +%2 ?A!@FB! 4($,$* (,- 2/6(- /+. $%-,G*$.$%2 2$6
4+*.H+-+%9,9$,$-5(%I./,$6(-
H z
2$*&$''$J+%2#$-*/9,9'$(.>I ′ = H z (0)
? !@KBL',,G$5(M,.$%N':.$%=(2$*,-/%2
ρ ′ /Ω
2$M%($*-6/%2$%&(2$*,-/%2$(%$,;#$*H:.$%,-OP$, 6(-"(%.$(-,':%9$J"(%.$(-,#*$(-$+%24(P$δ
>ρ ′ = ρ · l A = ρ
δ ρ ′ =
r ρ · ω · µ ◦ µ r
2
? !@3B4/%% 9('- 0O* 2($ $%-,-$.$%2$ <$*'+,-'$(-+%9 (% $(%$6 ;#$*H:.$%,-OP
dx, dz
#$( L+0-*$Q$%$(%$*./*67%(,.$%&$''$6(- 6/9%!N$'2/6G'(-+2$
H ◦
>dP = 1
2 H ◦ 2 · ρ ′ dxdz.
? !ARB*#+,&-.&+/&+0
•
4$*SP(%$Q$P-$*6T9'(.-2($)$*'+,-/*6$L+,#*$(-+%9$'$P-*76/9%$-(,.$*&$''$%(%6$U -/''(,.$% V7.'G*7M'$%?(%,#!-*/%,)$*,/'9$,.'7,,$%$ D$76$-*($%)$*.(%2$*%S-*/.'+%9,U•
4/&5&)%60(,)+&78&/2&)6.-2*2&)&%&'()*+,-.&(/02&)9&%::/2(&./.;*2%),6+)&0*.,(*<)&.=/):+>-%/2#
!" #$%&'()*+,(-.,$)*+/ 0*-%+.--%'&($)*+/ 123*$.*+45-6$2%
?/((&%0 :&) @&/:&.&)0(&.?,A=&%%<B%&/26.-&.%C00( 0/2:/& &%&'()*+,-.&(/02&$.&)-/&@/%,.D
:,)0(&%%&.E,%%-#4,)0(&%%6.-F./2(,6G2,)+*./02&9&%:&)@&02)C.'(#HI
∇ × ~ H ~ = ~j + D; ~ ˙ |· − E ~
46)2J6(6.-0-&0&(D− E ~ · ∇ × ~ H ~ = − ~j · E ~ − D ~ ˙ · E ~
∇ × ~ E ~ = − B; ~ ˙ |· H ~
K.:6'(/*.0-&0&(DH ~ · ∇ × ~ E ~ = − H ~ · B ~ ˙
E"#LMH4,..G*%-(:/&$.&)-/&@/%,.D,60:&)N::/(/*.:&)@&/:&.*@&.0(&2&.:&.B%&/26.-&.I
H ~ · ∇ × ~ E ~ − E ~ · ∇ × ~ H ~
| {z } = − H ~ · B ~ ˙ − ~j · E ~ − D ~ ˙ · E ~
∇ · ~
E ~ × H ~
= − H ~ · B ~ ˙ − σ · E ~ 2 − D ~ ˙ · E ~
?/(
D ~ = ε · E; ~ B ~ = µ · H ~
-/%(:,..∇ · ~ E ~ × H ~
+ σ ~ E 2 + µ ~ H · H ~ ˙ + ε ~ E · E ~ ˙ = 0;
·
Z dV
→ I
A
E ~ × H ~ d ~ A
| {z }
1
+ σ Z
V
E ~ 2 dV
| {z }
2
+ ∂
∂t Z
V
1
2 µ ~ H 2 + 1 2 ε ~ E 2
dV
| {z }
3
= 0
!"#$%&'()')*+(, !"#$%#&')* +,$- -.0120-3(-,4524-*'-67899:75,2;"'-<',='-60.=%
•
.*/0 12&>,0?@A0(A ~
.B6()*,.0@*(BCD"('-6()*,.0@*(E(')*>-6•
.*/0 32F0=)0(G(,@>)*('=('-6)0@2))(-(-G2@>=(-V
•
.*/0 42H-+(,>-6+(,6()I('0(,*(-?(@+(-(,6'('-V
&'(.B6()*,.0@*(E(')*>-6)+'0*(')*+>,0+(-524-*'-6JG(K*2,'-L(,=8+(M-'(,*N
S ~ = E ~ × H; ~ /W/m 2 .
!"#!%!"!# $%&'()*+)** ,)-./0(1,&- 3&*4&-5 6/.%*&7& $,-&(89&(1&
8)$90:;)5&.);0$=$.(2'>?$
U ~
@)'(2$;0')$A$,&.;U(~x, t) = ~ Re ~u(~x) · e iωt
= 1 2
~u · e iωt + ~u ∗ · e −iωt
~u(x) · e iωt
);%(&A$)()$5+19.$B$8&';%$../,2C+,U . ~
=D'*'+(/5%$
U ~
/,(V ~
$'2)A%;)0EU ~ · V ~ = 1
2 Re[~u ∗ · ~v
| {z }
!"#$%&"##!$'!(#
+~u · ~v · e 2iwt ].
F !G6H=D'-$)%.!I)%%$.@$'%$C+,*'+(/5%$,+;-)..)$'$,($'J'>?$,),5+19.$B$'K0'$)A@$);$2).%(&,,
U ~ · V ~ = 1
2 Re (~u ∗ · ~v) = 1
2 Re (~u · ~v ∗ ) U · V = 1
2 Re (u ∗ · v) = 1
2 Re (u · v ∗ ).
F !G"HK9$-)$..4D'($,*+:,%),2LM$5%+'E
~ ¯ S = 1
2
E ~ × H ~
F !GGH
F()$-$)%.! I)%%$./,2DA$'
e iwt
);%0)$'&.;+$,%0&.%$,HN1)%($13)'5&,%$).Re S ~ ¯ = 1 2 Re
E ~ × H ~ ∗
.
F !GOHP1 M&5//1 2).% 4D' ()$ K%'&0./,2;.$);%/,2 $),$' ;)0 &/;A'$)%$,($, 0&'1+,);0$, 3$..$ 9'+
=.Q0$E
Re S ¯ = 1 2 Re
E ~ × H ~ ∗ = 1
2 E ◦ H ◦ = 1 2
E ◦ 2 Z ◦
= E ◦ 2 754Ω
F
E ~
/,(H ~
;),(),*0&;$H F !GRHP,($'SQ0$C+,#/,(4/,5;$,($',E
E ◦ ∼ 100 V m Re S ¯ ∼ 10 4
754 ≃ 13 W m 2
=$.((/'0;0.&2),T/4%E
∼ 300 kV
m ; → Re S ¯
)*+%,-./#≃ 10 8 W
m 2
F !GUH8&-/)1M2.!A$%'Q2%()$K+.&'5+,;%&,%$F=.Q0$,.$);%/,2;()0%$($'K+,,$,;%'&0./,2&1V),%')%%
),()$V'(&%1+;90Q'$HE
S ¯ = 1, 35 kW/m 2
F !OWH!" #$%&'()$'%$ *+%$,-)&.$ /,( ),0+1+2$,$ 3$..$,4/,5%)+,
X)$.EY$;0'$)A/,2($'3$..$,&/;A'$)%/,2A$)A$.)$A)2$,
ρ(~x, t),~j(~x, t)
)1M&5//1; D ~ = ε ◦ E; ~ B ~ = µ ◦ H ~
F !O7H!"!# $%&'(')*%* +*,,*%-.%/01'% -23 41* 5'0*%617,*
5-36'7/0)0+/.0&)
B ~ = ∇ × ~ A; ~
89*:'()+*;+)'/<0-&A ~
="#>!?@/AB()0+/1.'1')<C
∇ × ~ E ~ = − ∇ × ~ A ~ ˙
∇ × ~ E ~ + A ~ ˙
= 0
="#>"?6-,0),B11103
E ~ + A ~ ˙
-&1D*-A0'/)'0/'1E(-&-*8'&A'1A-*1)'&&'/&-11'/FA-
∇ × ~ ∇ ~ f = 0
#G/1-)<C
E ~ + A ~ ˙ = − ∇ ~ φ
E ~ = − ∇ ~ φ − A ~ ˙
="#> ?40*H'13*I/('/B/1-B8A0'4'&&'/-B1H*'0)B/.0,:-(BB,,0)
D ~ = ε ◦ E; ~ B ~ = µ ◦ H. ~
="#>J?60'H'0A'/0/3+,+.'/'/K-LM'&&ND&'03B/.'/'*.'H'/A-//
∇ · ~ E ~ = ρ ε ◦
;
B/A,0)=O#> ?∆φ + ∂
∂t
∇ · ~ A ~
= − ρ
ε ◦ .
="#>O?GBP'*A',.0&)
∇ × ~ B ~ = µ ◦ ~j + µ ◦ ε ◦ E ~ ˙
=6B*3QB)B/.1.'1')<?.
="#>>?6-*-B1M0*A,0) D&'03B/.=O#>!?B/A=O#> ?C
∇ × ~ ∇ × ~ A ~ = µ ◦ ~j − µ ◦ ε ◦ ∇ ~ φ ˙ − µ ◦ ε ◦ A ~ ¨
%1.0&)C
∇ × ~ ∇ × ~ A ~ = ∇ ~
∇ · ~ A ~
− ∆ A ~
="#>R?6-,0)'*.0H)10313&0'P&0389*A-16B*3QB)B/.1.'1')<C
∆ A ~ − 1 c 2
~ ¨ A − ∇ ~
∇ · ~ A ~ + 1 c 2 φ ˙
= − µ ◦ ~j
="#>S?4-3& A'* %03)*-/18+*,-)0+/ =T.&# U-;# !? 1+F A-11 0/ =O#>O? B/A =O#>S?
A ~
B/Aφ
'/)(+;;'&) M'*A'/CA ~ ′ = A ~ + ∇ f
φ ′ = φ − f; ˙
=M.#=O#> ?? ="#R$?60'1'**'03),-/,0)A'*V+*'/)<N%03B/.
∇ · ~ A ~ + 1
c 2 φ ˙ = 0.
="#RW?6-,0)'*.'H'/103-B1=O#>O?B/A=O#>S?A0'0/3+,+.'/'/4'&&'/.&'03B/.'/89*A0'X+)'/<0-&'C
∆φ − 1
c 2 φ ¨ = − ρ ε ◦
∆ A ~ − 1 c 2
~ ¨
A = − µ ◦ ~j
="#R!?!"!# $%&'()*%(&% +,&%-.*'/%
78'(&9 ! "#$%&#'#(&* *+%$,-)&.$),$'#&/1.&(/,29:$'%$)./,2
ρ(~x ′ )
2).%;:2.!<&=!>?@φ(~x) = 1 4πε ◦
Z ρ(~x ′ )
| ~x − ~x ′ | d 3 x ′ .
; !A ?B1(C,&1)90$,7&..9%&11%($'E$)%'&2
ρ(~x ′ )
-/1*+%$,-)&.φ(~x)
F$2$,($'G&/4-$)%($'$.$5H%'+1&2,$%)90$,I)2,&.$:+,($'G&(/,29:$'%$)./,2
ρ ~x ′ , t − r c
1)%
r = | ~x − ~x ′ | .
; !A6?J&'&/9$'2)K%9)0$),GL9/,29&,9&%-48'(&9M'$%&'()$'%$N*+%$,-)&.&/9O.$)0/,2;P!A ?@
φ(~x, t) = 1 4πε ◦
Z ρ ~x ′ , t − r c
r d 3 x ′ ;
#$%&'()$'%$9*+%$,-)&.φ
; !A"?Q)%($14+.2$,($,E$F$)948'()$R'48../,2($'),0+1+2$,$,3$..$,2.$)0/,2;P!A>?(/0;P!A"?
F)'(($'Q$0&,)91/9($'M#$%&'()$'/,2N$%F&9:$'&,90&/.)0%!
E$F$)948'O.$)0/,2;P!A"?@
J&9 #&/1:+./1$, F)'( ), ()$ /,1)%%$.K&'$ S12$K/,2
V 1
/1~x
/,( ($, 2$9&1%$, /1H 2$K$,($,#&/1V 2
&/42$%$).%T1)% ($,*+%$,-)&.$,φ 1
/,(φ 2
!J&,,2).%@4πε ◦ φ(~x, t) = 4πε ◦ (φ 1 (~x, t) + φ 2 (~x, t)) .
4πε ◦ · φ(~x, t) = Z
V 1
ρ ~x ′ , t − r c r d 3 x ′ +
Z
V 2
ρ ~x ′ , t − r c
r d 3 x ′ .
; !AP?U,F$,(/,2($9G&=.&$HV=$'&%+'9$'2)K%
∆φ = ∆φ 1 + ∆φ 2 .
; !AW?X/, F)'(
V 1
2$,82$,( 5.$), 2$1&0%T 9+ (&99 ()$ #$%&'()$'/,2 :$',&0.Y99)2% F$'($, 5&,,!J&1)%$'2)K%9)048'
φ 1
($'$.$5%'+9%&%)90$7&..@∆φ 1 (~x, t) = − ρ((~x, t)) ε ◦
.
; !AA?J&9Z+./1$,
V 2
F8'($)19%&%)90$,7&..2&'5$),$,E$)%'&2-/∆φ
.)$4$',@∆φ = ∆φ 1
$,%9=')0%($'*+)99+,2.$)0/,2 ; !A[?J$'E$)%'&2:+,
V 2
5+11%&.9+&..$),&/9($'#$%&'()$'/,2T1)%($'UK0Y,2)25$)%:+1*&'&1$%$'t − r c
!X/,2).%$),$'9$)%948'$),$7/,5%)+,
f t − r c
∂ 2
∂r 2 f = 1 c 2
∂ 2 f
∂t 2 .
; ![\?U,($'$'9$)%92).%48'()$'&()&.$UK0Y,2)25$)%($9G&=.&$HV=$'&%+'9),</2$.5++'(),&%$,
∆f = 1 r · ∂ 2
∂r 2 (r · f ).
; ![]?4,+/(&)-/5(0/267)
∆φ 2
,809:";<=>∆φ 2 = 1 4πε ◦ ·
Z
V 2
1 r
∂ 2
∂r 2 h ρ
~x ′ , t − r c
i d 3 x ′ =
= 1
4πε ◦ c 2 Z
V 2
1 r
∂ 2 ρ
∂t 2 d 3 x ′
8.(&)?&)@&.A8.-B*.9:"C#=" 9!"CD=E7)A&.F)&.G75&)-,.-
V 1 → 0; V 2 → V
&)2H%(+,.02%/&I%/2∆φ = − ρ ε ◦
+ 1
4πε ◦ c 2 Z
V
¨ ρ
r d 3 x ′ ;
9!"C!=8.A+/(9:";!=JA/K"+/(
∂ 2
∂t 2
φ ¨ = 1 4πε ◦
Z
V
1
r ρ d ¨ 3 x ′ .
9!"C =&)-/5(0/2A/&/.2*+*-&.&3&%%&.-%&/28.-"
∆φ = 1 c 2 φ ¨ − ρ
ε ◦
;
L"&"A" 9!"CM=N.,%*-5&'*++(+,.A,0)&(,)A/&)(&?&'(*)O*(&.(/,%,80A&++,-.&(*0(,(/02&.E,%%9B-%"P,O"
D="$0%,8(&(
A(~x, t) = ~ µ ◦
4π
Z ~j ~x ′ , t − r c
r d 3 x ′ ;
Q&(,)A/&)(&0?&'(*)O*(&.G/,%A. ~
9!"C:=!" #%&'()*(+*, *-*./,'0%*, 1'23-
!!"#$%&'()*+ ,%-./01/2-"/ /"&/3 /#/42-"36/&7"80#39:;#"&$-"36/-</"2/-$/- <=&'/
l
>)?&)&/.6,2(&0 R*A&%%> S..&)2,%5 A&) T(,5%H.-&
l
U/&I&. A/& V,A8.-0()H-&) @H2)&.A &/.&) W,%5@&%%&B*.&/.&+T(,5&.A&G8+,.A&)&.J0*A,00A/&T()*+A/2(&j z
B*.z
8.,52H.-/-/0("!"!# $%&'()*+,- .(/ 0',/1'2&'*,.(3'(
4/&T()*+A/2(&U/&I(/+&K&'(/B&.T(,5L8&)02./((
a
9X+6,.-YT'/.(/&6&="j = j z · e iwt ;
8.,52H.-/-B*.z I = a · j z · e iwt
| {z }
I ◦
; − l
2 ≤ z ≤ + l
2
9!"C<=670 8-*'%7() 9"!:"; <=,
A ~
*,)'>/ 0'% <=, +'*0* #/,3?@*,/*'-7() A700%-'*B-'% *'(*A z
CD3?23(*(/*E
A z (~x, t) = µ ◦ I ◦
4π Z l/z
−l/2
e iω ( t− r c )
r dz
9 !:F;1A>*' 0/*%/ *(/02,*%*(+ 8-*'%7() 9"!F4; G7(H%0/
r
<=,r = | ~x − ~x ′ |
! I*' +*, J(/*),A/'3(*(/-A()+*,#/A>A(/*((*.A((<=,
l ≪ r; l ≪ λ
?'/k = 2π λ = ω c
'( )7/*,KH%*,7()
r
?'/ +*,L3-A,.33,+'(A/*
r
)-*'%)*0*/G/ &*,+*( 9M*,(<*-+(H%*,7();! 1*, N*,)-*'% +*0 ,*07-/'*,*(+*(O,)*>('00*0?'/+*?MA--*'(*,-H()*,*(6(/*((*'0/P7A-'/A/'@'((A%0/*%*(+*,6>>!9"!QQ;G7,
6>0/,A%-%A,A./*,'0/'.*'(*01'23-0+A,)*0/*--/!
1A?'/*,)'>/0'%<=,+A0N*./3,23/*(G'A-
A z (r, t) = µ ◦ I ◦ l
4πr e −ikr e iωt .
9 !::;67<D7)*-RH%*(
r = const
'0/A-03A z
.3(0/A(/!1A,A70*,%H-/?A(+A0#.A-A,23/*(G'A-φ
?'//*-0+*,S3,*(/GCO'%>*+'()7()98-*'%7()"!FQ;
φ ˙ = − c 2 · ∇ · ~ A. ~
9 !QTT;O0'0/A700%-'*B-'%+'*D3?23(*(/*
A z (r)
)*)*>*(!1A0%*'B/E∇ · ~ A ~ = ∂A z
∂ z
= ∂A z
∂r · ∂r
∂z
?'/
r = x 2 + y 2 + z 2 1 2
9 !QTQ;
→ ∂r
∂z = cosϑ;
A708-*'%7()9"!::;E∂A z
∂r = − µ ◦ I ◦ l 4π e −ikr
1 r 2 + ik
r
9 !QTU;
1A?'/>*.3??/?A(
∇ · ~ A ~ = − µ ◦ I ◦ l 4π e −ikr
1 r 2 + ik
r
cosϑ
9 !QT ;7(+=>*,+'*V*'/'(/*),A/'3(@3(8-*'%7()9"!QTT;
φ = − iI ◦ l 4πε ◦ ω e −ikr
1 r 2 + ik
r
cosϑe iωt .
9 !QT4;670+*(L3/*(/'A-*(
φ
7(+A ~
>*.3??/?A(0%'*B-'%+'*M*-+*,E ~
7(+H ~
!1A>*')'-/<=,H ~
EH ~ = 1
µ ◦ · ∇ × ~ A ~
9 !QT5;1A(7,*'(*
z
CD3?23(*(/*A z (r)
*W'0/'*,/X&',++'*Y3/A/'3(@3,/*'-%A</'(VZ-'(+*,.33,+'(A/*(A70)*<=%,/!
!!"#$%&'()*+,%-./1&%&'"&,2#"&$/-344-$"&56/&)
r 2 = ρ 2 + z 2 ; r = ρ 2 + z 2 1 2
∂r
∂ρ = sinϑ
5"#6$!7∇ × ~ A(ρ, ϕ, z) = ~ 1 ρ
∂A z
∂ϕ ~e ρ − ∂A z
∂ ρ
~e φ
5"#6$879-,0):'(+,,),-/,0) ;&'03</.5!#6$=7
H ϕ = i I ◦ l 2λ
sinϑ r e −ikr
1 − i
kr
· e iwt
H r = H ϑ = 0
5"#6$>7?@*A-1'&'()*013'?'&A.0&)'/)1B*'3'/A;&'03</.5!#8 7C
E ~ = − ∇ ~ φ − A ~ ˙
5"#6$D7E/F<.'&(++*A0/-)'/</A,0)
ω = c · 2π λ ; Z ◦ =
r µ ◦
ε ◦
; µ ◦ = Z ◦
c
5"#66$7'*3G&),-/
A ˙ z = i · Z ◦ · I ◦ · l 2λ · 1
r · e −ikr e iωt
∇ ~ φ = ∂φ
∂r ~e r + 1 r
∂φ
∂ϑ ~e ϑ + 1 rsinϑ
∂φ
∂ϕ ~e ϕ .
5"#6667H, 0/ F<.'&(++*A0/-)'/ A0'
E ~
I?'&A(+,B+/'/)'/-/J<.':'/ ,<11A ˙ z
/+3A<*3A ˙ r
</AA ˙ ϑ
-<1.'A*@()K'*A'/C
A ˙ r = ˙ A z · cosϑ; ˙ A ϑ = − A ˙ z · sinϑ
5"#66L7#%-'*6-'%*,%7-/89(
E r = − iZ ◦ I ◦ l λ
cosϑ r
i kr + 1
k 2 r 2
| {z }
!"#$%&
e −ikr e iωt
E ϑ = − iZ ◦ I ◦ l 2λ
sinϑ r
i kr + 1
k 2 r 2
| {z }
' !"#$%&(
− 1
|{z}
')$*+#$%&(
e −ikr e iωt .
: !;; <!!"#$%&'()*+,-#$.-/0-"#%&'-"&-1 -#-20/"14-&5"67#18-&0#9&' $-/
z
: 41- 7/"-&0"-/0)50'-6.'1)*-3&)'4'&&'7'0.)8-1)9:013';'*3-&)'/<8-11'0/'='&8(+,:+/'/)'
( H ~ )
/>*1'/(?*'3) 7>* @>16*'0)>/.1*03)>/.
~r
+*0'/)0'*) 01)(H ϕ )
< AB3*'/8E ~
'0/' C->:)(+,:+/'/)'E ϑ
1'/(*'3)>/8'0/'D+,:+/'/)'
E r
:-*-&&'&7>*@>16*'0)>/.1*03)>/.'/)3B&)#@&&.','0/E
•
='&8'* ,0)E ~ · Re ~ S 6 = 0
A'*8'/ -&1E
?='&8'* +8'*T M
?='&8'* F)*-/1G'*1-& ,-./')013H 6'7'03/')#•
='&8'*,0)H ~ · Re ~ S 6 = 0
3'0I'/H
?='&8'*+8'*T E
?='&8'*F)*-/1G'*1-&'&'()*013H!"!# $%&'()*+-( .*/0+)1%-2(1 345%2(+ 6(247
5-17>,JC'*)713'/K'&'()*013'/50:+&8>-&'='&8(-//,-/,0)'0/'*@/)'//'/13&'0L''*7'>?
.'/E
!!"#$%&'()*+, &-.&&.&/1#."2.
M-./')013'*50:+&E
H r = − k · F · I ◦
λ cosϑ
r i
kr + 1 k 2 r 2
e −ikr · e iωt H ϑ = − k · F · I ◦
2λ sinϑ
r i
kr + 1 k 2 r 2 − 1
e −ikr · e iωt
E ϕ = − Z ◦ · H ϑ
F"#NN H!"! 89+)1%-2(*&('+-%:)('
@61)*-3&3-*-()'*01)0(8'1'2:+&10,='*/L'&8E
Re ~ S = 1 2 Re
E ~ ϑ × H ~ ϕ ∗
=
= Z ◦ I ◦ 2 l 2 8λ 2 · sin 2 ϑ
r 2 · ~e r
F"#NNOH50' @61)*-3&3-*-()'*01)0( 01) *+)-)0+/119,,')*013 >, 80'
z
?@31'# =P* 80' *-80-&' @6?3B/.0.('0)8'1='*/L'&8'1.0&)E
E ϑ , H ϕ ∼ 1
r
F"#NNQH!!"#$%&'()**+ ,-%.#"01234561##%&'$143!'156430#61&71"56%&'5$"0618 &94."1463%:
ϑ = 90 ◦
)2"1'1564"01#61;%4<1=1"'6$1&>"&?%551"&14@#3&'1& A &61&&1 B
l = λ/2
C)6*078/*79)*0/,7%-/*:*'0/;()+;,%*'(*<;)*-=>%*?
P = Z π
0
Z 2π 0
Re S ~
r 2 sinϑdϑdϕ;
8'/ 6-*'%;()@"!AABCP = Z ◦ I ◦ 2 l 2 8λ 2
Z π 0
Z 2π 0
sin 3 ϑdϑ
| {z }
4 3
dϕ
|{z}
2π
P = πZ ◦ l 2
3λ 2 · I ◦ 2
@ !AADC!"!# $%&'()*+,-./01&-%'+0
1'*#2*'0;()+*,1'23-7(/*((**,E3-)*8'/*'(*,:*%*,-*'/;()@<37F'7--*'/;()GH&*'+,7%/-*'/;()
*/!C
!!"#$%&'()*D+ &E9FF#%&'1"&14 &61&&13& 1"&171014#1"6%&')
4.-&5*(&.&)6&,%(&/%7&04.(&..&.8/7&)0(,.709
P = 1
2 R s · I ◦ 2 = πZ ◦ l 2 3λ 2 · I ◦ 2
→ R s = 2π 3 Z ◦
l λ
2
| {z }
!"#$%&'()*+,-")!#',
;
R s = 790 Ω · l
λ 2
.
:"#;;<=>/&0/0(7&) !"#$%&'()*+,-")!#',&/.&)4.(&..&/+?,'@@+#
!"!# $%&'()*+ , -./(001* 012 3'%0(/ 4)55('
A&/ $/.8/)'@.- &%&'()*+,-.&(/02&) 3&%%&. ,@B 4(*+& *7&) C*%&'D%& 8&)7&. >/E%+*+&.(&
&)F&@-(#
G+*E(/02&.3&%%&.5&)&/2028/.-&.7/& $%&'()*.&.-&-&.D5&)7&.E*0/(/H&. I&).&.#
A&/'%&/.&. J()&@*5K&'(&.+/(
φ ≪ λ
2,(+,..#/%-+($)!"-&&'(#0-1-"2&'(3
L)*M&J()&@*5K&'(&:F#A#6,@2N6@ME,)(/'&%N
. . .
=+,2&.C/&OJ()&@@.-#A&/0&2)2*2&.,.)&-&.7&.P)&Q@&.F&.',..+,.7/&
e −
,%0Q@,0/B)&/5&(),2(&.O→
R2*+0*.OJ()&@@.-3/) 8*%%&. 7/& P)&Q@&.F,52S.-/-'&/( 7&) -&0()&@(&. T/2(%&/0(@.- 5&/ $/.B,%% &/.&0 P)&O
Q@&.F0E&'()@+0:J*..&.%/2(=5&)&2.&.#
G+0()&@&.7&.U5K&'(&.(0(&2(7,0>/E*%+*+&.(
p = q · l
˙
p = q ˙ · l = I · l = I ◦ · e iωt · l.
→ p = 1
iω I ◦ e iωt · l = I ◦ · l
ω e i ( ωt− π 2 ) .
:"#;;V=>,02&/M(
p = p ◦ · e i ( ωt− π 2 )
+/(
p ◦ = I ◦ · l
ω ; I ◦ = ωp ◦
l .
:"#;W!=>/&0&.J()*+8&)(0&(F&.8/)/.7/&L%&/2@.-:X#;;Y=&/.#>,..&)-/5(0/2
P = Z ◦ p 2 ◦ · ω 4
12πc 2 .
:"#;W;=A&/$/.B,%% H*.8&/M&+T/2(8/)7,%0*7&)'@)F8&%%/-&4.(&/%&)2&5%/20(S)'&)-&0()&@(#
λ
.%#&∼ 400 nm
λ
"/!∼ 800 nm
:"#;WW=167'/83-)/89,+60:*,%;-/('0+*,)*0/,*</*(='%/-*'0/<()*(>
P
!"#P
$%&∼ 16
1
? !5@ A1'*0*,)'B/+'*,3/)*8;,B/*C3,)*(D<(+EB*(+03((*03&'*+*(B-6<*(F6)*0%'77*-?#/,*<-'%/A!