1、)()()()()()(xIdxxdIdxxIdxdxxdIxIdxxIvvvvvvkck42xvveIxI0)(光在媒质中传播1/距离时能量减弱到原来能量的1/e。k是媒质的消光系数。deRT2)1(222)1()1(knknRdveIR02)1(dveIRR0)1(dveIR0)1(0)1(vIR0vRI0vIgEhh00h00/c)()(24.1)(0meVEeVEhcggIEh0)(000pnqpn)()(00ppnnqpn000)()(pnpnpnqpnq)(pnpnqIdxdIIQItpn)(,ppnnspnsIqIpIntstsee),1(tIrrIrtIrntIrtghrIn2
2、/12/12/12/12/1)(111)(VlGnttn2,AEqGAEAJIpnnLLL)(EJJJL)()(00Elnt)1(nptnLLphAlqGInLGnAlqGInptnLL)1(sVlElnnt92421041.7)10)(1350()10100(2961083.1)13504801(1041.710)1(nptnph10TkqVSFeII10TkqVSLFLeIIIII1ln0SLIIIqTkV1ln0SLocIIqTkVLscIIVeIVIVeIIIVPTkqVSLTkqVSL11000exp 1)exp(000TkqVTkqVITkqVIIdVdPmmsmSLSLmTmIITkqVVV1exp1010TkqVSLFLeIIIII10TkqVSmLmeIIITkqVmmmeITkqVI000|mmmIVR/000200200111IIPTkqVTkVqITkqVePVTkqIPVIPPscinmmminminmminmocscVI,ocscmmVIVIFF inocscPVFFIPINPIN光电二极管的瞬时光电流比普通光电二极管的大。光电二极管的瞬时光电流比普通光电二极管的大。pst100101073GHzft51020012112LcLcLccLEEIIIIIIIIII)1(1
