Inkqubo yoVavanyo ye-LPT-2 yeMpembelelo ye-Acousto-Optic

Inkcazo emfutshane:

Uvavanyo lwe-Acousto-optic effect sisizukulwana esitsha sesixhobo sovavanyo lomzimba kwiikholeji nakwiiyunivesithi, sisetyenziselwa ukufunda inkqubo yokwenyani yokusebenzisana kwentsimi yombane kunye nentsimi yokukhanya kwiimvavanyo zefiziksi ezisisiseko kunye nezilingo zobungcali ezinxulumene noko, kwaye sikwasebenza kuphando lovavanyo lonxibelelwano lwe-optical kunye nokucubungula ulwazi lwe-optical. Ingabonakaliswa ngokubonakalayo nge-oscilloscope yedijithali ephindwe kabini (Onganyanzelekanga).

Xa amaza e-ultrasound ehamba kwi-medium, i-medium iphantsi koxinzelelo lwe-elastic kunye notshintsho oluqhubekayo kwixesha nakwindawo, nto leyo ebangela utshintsho olufanayo oluqhubekayo kwi-refractive index ye-medium. Ngenxa yoko, xa umtha wokukhanya udlula kwi-medium xa kukho amaza e-ultrasound kwi-medium, uyaphazanyiswa yi-medium esebenza njenge-phase grating. Le yingcamango esisiseko ye-acousto-optic effect.

Isiphumo se-Acousto-optic sahlulwe saba sisiphumo esiqhelekileyo se-acousto-optic kunye nesiphumo esingaqhelekanga se-acousto-optic. Kwi-isotropic medium, iplane ye-polarization yokukhanya kwesiganeko ayitshintshwa yi-acousto-optic interaction (ebizwa ngokuba yi-normal acousto-optic effect); kwi-anisotropic medium, iplane ye-polarization yokukhanya kwesiganeko itshintshwa yi-acousto-optic interaction (ebizwa ngokuba yi-anomalous acousto-optic effect). Isiphumo se-acousto-optic esingaqhelekanga sibonelela ngesiseko esibalulekileyo sokwenza ii-deflectors eziphambili ze-acousto-optic kunye nezihluzi ze-acousto-optic ezinokuhlengahlengiswa. Ngokungafaniyo nesiphumo esiqhelekileyo se-acousto-optic, isiphumo se-acousto-optic esingaqhelekanga asinakuchazwa yi-Raman-Nath diffraction. Nangona kunjalo, ngokusebenzisa iingcamango ze-parametric interaction ezifana nokuhambelana kwe-momentum kunye nokungafani kwi-nonlinear optics, ithiyori edibeneyo ye-acousto-optic interaction inokusekwa ukuchaza zombini iziphumo ze-acousto-optic eziqhelekileyo nezingaqhelekanga. Uvavanyo olukule nkqubo lugubungela kuphela isiphumo esiqhelekileyo se-acousto-optic kwimidiya ye-isotropic.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Imizekelo yoVavanyo

1. Jonga i-Bragg diffraction uze ulinganise i-engile ye-Bragg diffraction

2. Bonisa imo ye-acousto-optic modulation waveform

3. Jonga into yokuphambuka kwe-acousto-optic

4. Linganisa ukusebenza kakuhle kwe-acousto-optic diffraction kunye ne-bandwidth

5. Linganisa isantya sokuhamba kwamaza e-ultrasound kwi-medium

6. Lingisa unxibelelwano lwe-optical usebenzisa indlela yokuguqula i-acousto-optic

Iinkcukacha

Inkcazo	Iinkcukacha
Isiphumo seLaser yeHe-Ne	<1.5mW@632.8nm
I-LiNbO₃Ikristale	I-Electrode: I-electrode egqunywe ngegolide engaphezulu kwe-X ithambile <λ/8@633nm Uluhlu lokudlulisa: 420-520nm
I-Polarizer	Ukuvulwa kwe-Optical Φ16mm /Ububanzi beWavelength 400-700nmIqondo lokuqhekeka 99.98%Ukudluliselwa kwe-30% (iparaxQllel); 0.0045% (ethe nkqo)
Isitshicileli	Iseli yefoto yePIN
Ibhokisi yamandla	I-amplitude ye-sine wave modulation: 0-300V continuous tunableI-Output DC bias voltage: 0-600V continuous adjustable output frequency: 1kHz
Isitimela se-Optical	1m, iAluminiyam