Inkqubo yoMfuniselo ye-LPT-2 ye-Acousto-Optic Effect

Inkcazelo emfutshane:

Uvavanyo lwesiphumo se-Acousto-optic sisizukulwana esitsha sesixhobo sovavanyo lomzimba kwiiKholeji nakwiiyunivesithi, sisetyenziselwa ukufunda inkqubo ebonakalayo yentsimi yombane kunye nentsebenziswano yentsimi ekhanyayo kwimifuniselo esisiseko yefiziksi kunye nemifuniselo yobuchwephesha enxulumeneyo, kwaye ikwasebenza kuphando lovavanyo lonxibelelwano lwe-optical kunye nokusetyenzwa kolwazi. Inokuboniswa ngokubonakalayo nge-digital oscilloscope ephindwe kabini (Ngokuzikhethela).

Xa amaza e-ultrasound ehamba kwindawo ephakathi, i-medium ixhomekeke kwi-elastic strain kunye neenguqu zexesha kunye nexesha kunye neendawo, ezibangela ukutshintshwa kwexesha elifanayo kwi-index ye-refractive ye-medium. Ngenxa yoko, xa i-ray yokukhanya idlula kwi-medium phambi kwamaza e-ultrasound phakathi, iphazamiseka ngokusebenza okuphakathi njengesigaba sokugaya. Le yithiyori esisiseko ye-acousto-optic effect.

Isiphumo se-acousto-optic sihlelwa ngokwesiqhelo se-acousto-optic effect kunye ne-anomalous acousto-optic effect. Kwi-isotropic medium, i-plane ye-polarization yokukhanya kwesiganeko ayitshintshwa yi-acousto-optic interaction (ebizwa ngokuba yi-normal acousto-optic effect); kwindawo ye-anisotropic, i-plane ye-polarization yokukhanya kwesiganeko iguqulwa yi-acousto-optic interaction (ebizwa ngokuba yi-anomalous acousto-optic effect). Isiphumo esingaqhelekanga se-acousto-optic sibonelela ngesiseko esingundoqo sokwenziwa kwezinto eziphambili zokuphambukisa i-acousto-optic kunye nezihluzo ze-acousto-optic ezinokuqhutywa. Ngokungafaniyo nesiphumo esiqhelekileyo se-acousto-optic, isiphumo esingaqhelekanga se-acousto-optic ayinakuchazwa yi-Raman-Nath diffraction. Nangona kunjalo, ngokusebenzisa iikhonsepthi zonxibelelwano lweparametric ezinje ngokuthelekisa ukukhawuleza kunye nokungahambelani kwi-nonlinear optics, ithiyori edibeneyo yokunxibelelana kwe-acousto-optic inokusekwa ukucacisa zombini iziphumo eziqhelekileyo kunye nezingaqhelekanga ze-acousto-optic. Imifuniselo kule nkqubo igubungela kuphela isiphumo esiqhelekileyo se-acousto-optic kwimidiya ye-isotropic.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Linge imizekelo

1. Jonga i-Bragg diffraction kunye nomlinganiselo we-Bragg diffraction angle

2. Bonisa i-acousto-optic modulation waveform

3. Qwalasela isenzeko se-acousto-optic deflection

4. Umlinganiselo we-acousto-optic diffraction kunye ne-bandwidth

5. Ukulinganisa isantya sokuhamba samaza e-ultrasound kwindawo ephakathi

6. Ukulinganisa unxibelelwano lwe-optical usebenzisa i-acousto-optic modulation technique

Iinkcukacha

Inkcazo	Iinkcukacha
I-He-Ne Laser Output	<1.5mW@632.8nm
LiNbO₃Ikristale	I-Electrode: X umphezulu wegolide we-electrode flatness <λ/8@633nmUluhlu lweTransmittance: 420-520nm
I-Polarizer	I-Optical aperture Φ16mm / ububanzi beWavelength 400-700nmPolarizing degree 99.98%Transmissivity 30% (paraxQllel); 0.0045% (the nkqo)
Umtshini	I-PIN yefotocell
Ibhokisi yaMandla	Imveliso ye-sine wave yokumodareyitha i-amplitude: 0-300V eqhubekayo ekuqhutyweni.Isiphumo sombane we-DC bias voltage: 0-600V eqhubekayo isiphumo esihlengahlengiswayo: 1kHz
I-Optical Rail	1m, iAluminiyam