中科大光学课件 chap7.pdf

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1、§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/Ÿ,à…ËöØbIfhogø§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/ŸOutline§1Mûߧ„âMØb§2c&I„M:§3?ÏŸøl>®§4hogø§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/Ÿ
MûßâM„ØbMO„(U˜1(x;y)!U˜2(x;y)â„•U˜2(x;y)!U˜(x0

2、;y0)xU˜(x00iU˜ikr;y)2(x;y)edxdylr0§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/Ÿ
Mûß9nOýpU˜2(x;y)˜t(x;y)=U˜1(x;y)x00i˜t(x;y)U˜ikr)U˜(x;y)1(x;y)edxdylr0ùâ„M„nMÏðIâ(•Ç-1ŽÐÍàâM/EøMÑØv:Žê1•:ÑM°a‚œ$*MOøàvOýpøX˜t(x;y)=˜t1
˜t2§7.1Mûߧ„âMØb§7.2c&I„M:§7

3、.3?ÏŸøð>®§7.4ho/Ÿ
Mûßåûß᳕taöxU˜(x00i˜t(x;y)U˜ikr;y)=1(x;y)edxdylf(x0x)2(y0y)2(•taörz++ï€:2z2z00iikzxik((x0x)2+(y0y)2)U˜(x;y)=e˜t(x;y)U˜1(x;y)e2z2zdxdylzS=)ò…3Mï§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/Ÿ
Mûßx2+y2å¥6OÝMO³Üá³Ü:aözl(x0x)2(y0

4、y)2krk(z++)2z2zx02+y02xx0+yy0k(z+)2zzMïØ:000iik(z+x02+y02)xikxx0+yy0U˜(x;y)=e2z˜t(x;y)U˜1(x;y)exdxdylzS=)+Œ9Mï=)U˜1/sbâÓœ/Oýp„…ËöØb
§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/ŸŒ
„øMØbýp(Ïûß-$*(P6âMØbâM(9ØZc-Ã)(OýpÏð(A2(x;y)eij2(x;y);(³…)˜t(x;y)=A1(

5、x;y)eij1(x;y)0;(³)§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/ŸŒ
„øMØbýpýeÍ
86A1A2³…˜tL(x;y)ei(j2(x;y)j1(x;y))=eijL(x;y)•tÑ<„jL(x;y)=k(D1(x;y)+D2(x;y)+nd(x;y))=k(nd0(n1)(D1+D2))q22x+yD1(x;y)=r1r2(x2+y2)12r1q22x+yD2(x;y)=r2r2(x2+y2)22r2§7.1Mûߧ„âM

6、Øb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/ŸŒ
„øMØbýpãe—n11122x2+y2jL(x;y)=k()(x+y)=k2r1r22FÙÌe»†x;yàs„knd0y1F=;c/èl(n1)(11)r1r2x2+y2ik)˜tL(x;y)=e2F(ÐÍâMØb„:‚œú°†b„Œ!øûàP((âMvžEHœøSŽåâφ*„Zc¡£:/&žiX(§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/ŸŒ

7、
„øMØbýpù*U˜ú(x;y)=U˜e(x;y)˜tL(x;y)x2+y2ik=U˜e(x;y)e2Fikzx2+y2x2+y2Aeikik=e2se2Fzikzx2+y2Aeik=e2s0z111ÙÌ=s0Fsc/دb„•tÏl§7.1Mûߧ„âMØb§7.2c&I„M:§7.3?ÏŸøð>®§7.4ho/Ÿ
ñ„øMØbýpñ„(OlI_*¹„sLI_Øb:æ*¹„sLI_ƒ”Sù”¿'øûàPñøûàPjP=k(D+nd)=knd0k(n1)D˜t

8、ik(n1)ax(Dax;e»knd)P(x;y)e0ô,0˜t(x;y)eik(n1)(a1x+a2y)Pa1;a2/LbÕ¿¹„$*¹Y&„Y