Dab tsi yog acousto-optic modulator AOM modulator

Dab tsi yog acousto-optic modulatorAOM modulator

Acousto-optic modulation yog ib qho kev hloov kho sab nraud. Feem ntau, cov khoom siv acousto-optic uas tswj qhov kev sib txawv ntawm cov teeb ci laser hu uaacousto-optic modulator(AOM modulator). Lub teeb liab modulated ua rau ntawm electroacoustic transducer nyob rau hauv daim ntawv ntawm ib tug hluav taws xob teeb liab (amplitude modulation), thiab ces hloov mus rau hauv ib tug ultrasonic teb uas hloov nyob rau hauv daim ntawv ntawm ib tug hluav taws xob teeb liab. Thaum lub teeb nthwv dej dhau los ntawm qhov nruab nrab acousto-optic, vim yog cov nyhuv acousto-optic, cov khoom siv kho qhov muag tau hloov kho thiab dhau los ua ib qho kev siv zog modulated nthwv dej uas "nqa" cov ntaub ntawv.

Txoj cai ua haujlwm

Acousto-optic modulationyog ib qho txheej txheem ntawm lub cev uas siv cov nyhuv acousto-optic los thauj cov ntaub ntawv mus rau qhov chaw kho qhov muag ntau zaus. Lub teeb liab modulated ua rau ntawm electroacoustic transducer nyob rau hauv daim ntawv ntawm ib tug hluav taws xob teeb liab (amplitude modulation), thiab ces hloov mus rau hauv ib tug ultrasonic teb uas hloov nyob rau hauv daim ntawv ntawm ib tug hluav taws xob teeb liab. Thaum lub teeb nthwv dej dhau los ntawm qhov nruab nrab acousto-optic, vim yog cov nyhuv acousto-optic, cov khoom siv kho qhov muag tau hloov kho thiab dhau los ua ib qho kev siv zog modulated nthwv dej uas "nqa" cov ntaub ntawv.

acousto-optic modulator (AOM modulator) feem ntau yog tsim los ntawm acousto-optic crystals, transducers, nqus cov khoom siv thiab cov tsav tsheb. Modulated teeb liab tso zis los ntawm tus neeg tsav tsheb ua rau ntawm lub transducer nyob rau hauv daim ntawv ntawm ib tug hluav taws xob teeb liab thiab ces hloov mus rau hauv ib tug ultrasonic yoj uas txawv nyob rau hauv daim ntawv ntawm ib tug hluav taws xob teeb liab. Thaum lub ultrasonic nthwv dej dhau los ntawm acousto-optic nruab nrab, nws ua rau lub zos compression thiab elongation ntawm nruab nrab, tsim elastic strain. Cov kab mob no hloov ib ntus nrog lub sijhawm thiab qhov chaw, ua rau qhov nruab nrab tuaj yeem nthuav tawm qhov sib txawv ntawm qhov ntom ntom, zoo ib yam li theem grating. Thaum lub teeb dhau los ntawm qhov nruab nrab no cuam tshuam los ntawm ultrasonic tsis, qhov tshwm sim diffraction tshwm sim. Qhov tshwm sim no hu ua acousto-optic nyhuv. Nyob rau hauv cov nyhuv ntawm lub suab thiab lub teeb, lub optical carrier yog modulated thiab dhau los ua ib tug modulated nthwv dej uas "nqa" cov ntaub ntawv.

Luv luv piav qhia txog cov ntsiab lus tseem ceeb

Diffraction efficiency thiab modulation poob

2. Bragg Angle: Thaum teeb meem teeb pom kev nkag mus rau hauv ib qhoacousto-optic ntaus ntawvntawm Bragg Angle, qhov zoo tshaj plaws diffraction efficiency tuaj yeem ua tiav. Angular yuam kev yuav txo tau efficiency.

3. Divergence Angle adaptation

4. Modulation ceev: Lub sij hawm hloov kho qhov muag yog txhais los ntawm lub sij hawm kis tau tus mob ntawm lub suab yoj los ntawm lub beam duav nyob rau hauv lub A0 siv lead ua.

5. Optimal RF Fais Fab (Saturation Power)