Yintoni i-modulator ye-acousto-optic i-AOM modulator

Yintoni i-modulator ye-acousto-opticImodulator ye-AOM

I-Acousto-optic modulation yindlela yokuguqula yangaphandle. Ngokuqhelekileyo, isixhobo se-acousto-optic esilawula ukutshintsha kobunzulu bomsebe welaser sibizwa ngokuba yi-i-modulator ye-acousto-optic(i-modulator ye-AOM). Isignali eguquliweyo isebenza kwi-transducer ye-electroacoustic ngendlela yesignali yombane (i-amplitude modulation), ize iguqulwe ibe yintsimi ye-ultrasonic etshintsha ngendlela yesignali yombane. Xa amaza okukhanya edlula kwi-acousto-optic medium, ngenxa yesiphumo se-acousto-optic, i-optical carrier iyaguquguqulwa kwaye ibe yi-intensity modulated wave "ethwala" ulwazi.

Umgaqo wokusebenza

Ukuguqulwa kwe-acousto-opticyinkqubo ebonakalayo esebenzisa isiphumo se-acousto-optic ukulayisha ulwazi kwi-optical frequency carrier. Isignali eguquliweyo isebenza kwi-electroacoustic transducer ngendlela yesignali yombane (i-amplitude modulation), ize iguqulwe ibe yintsimi ye-ultrasonic etshintsha ngendlela yesignali yombane. Xa amaza okukhanya edlula kwi-acousto-optic medium, ngenxa yesiphumo se-acousto-optic, i-optical carrier iyaguquguqulwa kwaye ibe yi-intensity modulated wave "ethwala" ulwazi.

I-modulator ye-acousto-optic (i-modulator ye-AOM) idla ngokwenziwa ziikristale ze-acousto-optic, ii-transducer, izixhobo zokufunxa kunye nabaqhubi. Isiphumo sesignali esilungisiweyo esivela kumqhubi sisebenza kwi-transducer ngendlela yesignali yombane size emva koko siguqulwe sibe yi-ultrasound wave etshintshayo ngendlela yesignali yombane. Xa i-ultrasonic wave idlula kwi-acousto-optic medium, ibangela ucinezelo lwendawo kunye nokwandiswa kwe-medium, ivelise uxinzelelo lwe-elastic. Olu xinzelelo lutshintsha rhoqo ngexesha nendawo, nto leyo ebangela ukuba i-medium ibonise i-alternating density phenomenon, efana ne-phase grating. Xa ukukhanya kudlula kule medium kuphazanyiswa ngamaza e-ultrasonic, kwenzeka i-diffraction phenomenon. Le meko ibizwa ngokuba yi-acousto-optic effect. Phantsi kwesiphumo sesandi nokukhanya, i-optical carrier iyaguqulwa kwaye ibe yi-modified wave "ethwala" ulwazi.

Chaza ngokufutshane iiparameter eziphambili

Ukusebenza kakuhle kwe-diffraction kunye nokulahleka kwe-modulation

2. I-Bragg Angle: Xa isibane sengozi singena kwi-isixhobo se-acousto-opticKwi-Bragg Angle, ukusebenza kakuhle kwe-diffraction kunokufezekiswa. Iimpazamo ze-angular ziya kunciphisa ukusebenza kakuhle.

3. Uhlengahlengiso lwe-Angle yeDivergence

4. Isantya sokuguquguquka: Ixesha lokutshintsha kwe-optical lichazwa lixesha lokudlulisela kwezandi ngesinqe se-beam kwi-crystal ye-A0.

5. Amandla e-RF afanelekileyo (Amandla okugcwala)