Nheyo yekushanda kwe acousto-optic modulator

1. Nheyo yekushanda yemodulator yeacousto-optic
Chinhu chikuru chemuchina we acousto-optic modulator (modulator yeAOM) ndiyo acousto-optic effect. Chimiro chayo chikuru chinosanganisira makristaro e acousto-optic, ma transducer, zvishandiso zvekutora, uye madhiraivha. Kuburitswa kwechiratidzo chemagetsi nemutyairi kunoshandurwa kuita mafungu e ultrasonic ne transducer. Kana mafungu e ultrasonic akapararira mu acousto-optic medium, anokonzera shanduko dzinoitika mu medium density, zvichigadzira chimiro chakafanana ne phase grating. Kana chiedza chikapfuura nemu medium iyi, diffraction inoitika, zvichiita kuti optical carrier wave ifambiswe. Kune mhando mbiri dze diffraction modes: Raman Ness diffraction uye Bragg diffraction. AOM modulator inowanzoshandiswa inowanzo shanda muBragg diffraction mode, apo incident light incident incident pane specific Bragg angle uye output light ine undeflected zero order light uye first-order diffraction light ine deflection angle.
2. Zviyero zvikuru zvehunyanzvi zve acousto-optic modulator
2.1 Kushanda zvakanaka kwe diffraction uye kurasikirwa kwe modulation: zvinoyera kugona kwechishandiso kushandura chiedza chechiitiko kuita chiedza che diffract chakagadzirwa ne first-order pamwe nekurasikirwa kwe optical kunoenderana nacho.
2.2 Bragg angle: Iyo chaiyo incident angle inoita kuti diffraction ishande zvakanaka, iyo ine chekuita ne laser wavelength, radio frequency, uye sound velocity iri mukati mekristaro.
2.3 Simba reRF rakakwana: kureva simba rekuzadza, simba rekutyaira reRF rinodiwa kuti pave nekushanda zvakanaka kwe diffraction. Fomura chaiyo yekuverenga inopiwa munyaya yacho.
2.4 Kugadziriswa kwekona yeDivergence: Kuti ive nechokwadi chekuti inoshanda zvakanaka, kona yeDivergence yeIncident Laser inofanira kuenderana nehunhu hweAcousto-Optic Medium.
2.5 Kumhanya kwekuchinja: kazhinji kunomiririrwa nenguva yekukwira kwechiedza, zvichienderana nenguva yekutumirwa kwemafungu eruzha kuburikidza nedanda, uye zvine chekuita nedhayamita yedanda uye kumhanya kweruzha.
3. Mashandisirwo makuru emamodulator e acousto-optic
Mashandisirwo makuru mashanu etekinoroji yeacousto-opticndeidzi:
3.1 Acousto optic Q-switch: Kana yakaiswa mukati melaser cavity, inogadzira high peak power pulsed laser nekuchinja nekukurumidza kurasikirwa kwecavity.
3.2 Acousto optic modulator/switch: inoshandiswa pakuchinja simba kana kudzora nekukurumidza laser iri kunze kwelaser cavity, uye inogona kushandiswa se shutter kana variable attenuator.
3.3 Acoustic optic deflector: Nekuchinja frequency yeredhiyo kuti ibvise danda relaser, scanning yekukurumidza inoitwa, yakakodzera kushandiswa zvisina tsarukano kana kuskena nguva dzose.
3.4 Acousto optic frequency shifter: yakagadzirirwa kufambisa laser frequency kumusoro kana pasi, uye inogona kurongwa kuti iwane frequency shift yakaoma.
3.5 Acousto optic Adjustable Filter: Firita yemagetsi inogadziriswa yemagetsi yakasimba inogona kusarudza nekukurumidza uye nenzira inochinja mawavelength chaiwo kubva pamhando dzakasiyana dzemagetsi.chiedza chinobva.