Dab tsi yog lub acousto-optic modulator AOM modulator?

Dab tsi yog lub acousto-optic modulatorAOM modulator

Acousto-optic modulation yog ib txoj kev siv sab nraud los hloov kho. Feem ntau, lub cuab yeej acousto-optic uas tswj qhov sib txawv ntawm lub teeb laser hu uaacousto-optic modulator(AOM modulator). Lub teeb liab modulated ua haujlwm rau ntawm lub transducer electroacoustic hauv daim ntawv ntawm lub teeb liab hluav taws xob (amplitude modulation), thiab tom qab ntawd hloov mus rau hauv lub teb ultrasonic uas hloov pauv hauv daim ntawv ntawm lub teeb liab hluav taws xob. Thaum lub teeb nthwv dej hla dhau lub acousto-optic nruab nrab, vim yog qhov cuam tshuam acousto-optic, lub teeb liab optical carrier raug modulated thiab dhau los ua lub zog modulated nthwv dej uas "nqa" cov ntaub ntawv.

Txoj cai ua haujlwm

Kev hloov kho Acousto-opticyog ib qho txheej txheem lub cev uas siv cov nyhuv acousto-optic los thauj cov ntaub ntawv rau ntawm lub tshuab nqa zaus optical. Lub teeb liab modulated ua haujlwm rau ntawm lub transducer electroacoustic hauv daim ntawv ntawm lub teeb liab hluav taws xob (amplitude modulation), thiab tom qab ntawd hloov mus rau hauv lub teb ultrasonic uas hloov pauv hauv daim ntawv ntawm lub teeb liab hluav taws xob. Thaum cov nthwv dej teeb hla dhau lub nruab nrab acousto-optic, vim yog cov nyhuv acousto-optic, lub tshuab nqa optical raug modulated thiab dhau los ua nthwv dej modulated uas "nqa" cov ntaub ntawv.

Ib qho acousto-optic modulator (AOM modulator) feem ntau yog tsim los ntawm cov siv lead ua acousto-optic, transducers, cov khoom siv nqus thiab cov tsav tsheb. Cov teeb liab modulated tso tawm los ntawm tus tsav tsheb ua haujlwm rau ntawm transducer hauv daim ntawv ntawm lub teeb liab hluav taws xob thiab tom qab ntawd hloov mus ua lub zog ultrasonic uas hloov pauv hauv daim ntawv ntawm lub teeb liab hluav taws xob. Thaum lub zog ultrasonic hla dhau lub zog acousto-optic, nws ua rau muaj kev sib zog hauv zos thiab kev ntev ntawm lub zog, tsim kom muaj kev nyuaj siab elastic. Lub zog no hloov pauv tas li nrog lub sijhawm thiab qhov chaw, ua rau lub zog nruab nrab ua rau muaj qhov sib txawv ntawm qhov ceev, zoo ib yam li lub zog grating theem. Thaum lub teeb hla dhau lub zog nruab nrab no cuam tshuam los ntawm cov zog ultrasonic, qhov tshwm sim diffraction tshwm sim. Qhov tshwm sim no hu ua qhov cuam tshuam acousto-optic. Nyob rau hauv qhov cuam tshuam ntawm lub suab thiab lub teeb, lub teeb pom kev zoo raug modulated thiab dhau los ua lub zog modulated uas "nqa" cov ntaub ntawv.

Piav qhia luv luv txog cov yam ntxwv tseem ceeb

Kev ua haujlwm ntawm diffraction thiab kev poob ntawm modulation

2. Bragg Angle: Thaum lub teeb ci ntsa iab nkag mus rau hauvlub cuab yeej acousto-opticntawm Bragg Angle, qhov ua tau zoo tshaj plaws ntawm diffraction tuaj yeem ua tiav. Qhov yuam kev angular yuav txo qhov ua tau zoo.

3. Kev hloov pauv ntawm lub kaum sab xis sib txawv

4. Kev ceev ntawm kev hloov pauv: Lub sijhawm hloov kho qhov muag yog txhais los ntawm lub sijhawm kis ntawm lub suab nthwv dej los ntawm lub duav hauv A0 siv lead ua.

5. Lub zog RF zoo tshaj plaws (Lub zog saturation)