Uhlelo Lokuhlola lwe-LPT-2 Lomphumela We-Acousto-Optic

Incazelo emfushane:

Ukuhlolwa komphumela we-Acousto-optic kuyisizukulwane esisha sethuluzi lokuhlola ngokomzimba emaKolishi nasemanyuvesi, elisetshenziselwa ukutadisha inqubo ebonakalayo yokusebenzisana kwensimu kagesi kanye nensimu yokukhanya ekuhlolweni okuyisisekelo kwefiziksi kanye nokuhlolwa kobungcweti okuhlobene, futhi kusebenza nasekucwaningweni kokuhlola kokuxhumana kwe-optical kanye nokucubungula ulwazi lwe-optical. Kungaboniswa ngokubonakalayo nge-oscilloscope yedijithali ephindwe kabili (Ongakukhetha).

Uma amagagasi e-ultrasound ehamba endaweni yokuxhumana, indawo yokuxhumana ibhekene nokucindezeleka okunwebekayo okunezinguquko ngezikhathi ezithile kokubili ngesikhathi nasesikhala, okubangela ushintsho olufanayo lwezikhathi ezithile ku-refractive index yendawo yokuxhumana. Ngenxa yalokho, lapho umsebe wokukhanya udlula endaweni yokuxhumana lapho kukhona amagagasi e-ultrasound endaweni yokuxhumana, uyaphazanyiswa yindawo esebenza njenge-phase grating. Lena yinkolelo-mbono eyisisekelo yomphumela we-acousto-optic.

Umphumela we-Acousto-optic uhlukaniswa ngomphumela ojwayelekile we-acousto-optic kanye nomphumela ongavamile we-acousto-optic. Ku-medium ye-isotropic, indiza ye-polarization yokukhanya kwe-incident ayishintshwa ukusebenzisana kwe-acousto-optic (okubizwa ngokuthi umphumela ojwayelekile we-acousto-optic); ku-medium ye-anisotropic, indiza ye-polarization yokukhanya kwe-incident ishintshwa ukusebenzisana kwe-acousto-optic (okubizwa ngokuthi umphumela we-acousto-optic ongavamile). Umphumela we-acousto-optic ongavamile unikeza isisekelo esiyinhloko sokwenziwa kwama-deflector e-acousto-optic athuthukisiwe kanye nezihlungi ze-acousto-optic ezilungisekayo. Ngokungafani nomphumela ojwayelekile we-acousto-optic, umphumela we-acousto-optic ongavamile awukwazi ukuchazwa yi-Raman-Nath diffraction. Kodwa-ke, ngokusebenzisa imiqondo yokusebenzisana kwe-parametric efana nokufanisa i-momentum kanye nokungafani kuma-optics angewona umugqa, inkolelo-mbono ehlanganisiwe yokusebenzisana kwe-acousto-optic ingasungulwa ukuchaza imiphumela ye-acousto-optic evamile kanye ne-acousto-optic engavamile. Ukuhlolwa kulesi simiso kuhlanganisa kuphela umphumela ojwayelekile we-acousto-optic kuma-isotropic media.

Sithumelele i-imeyili

Imininingwane Yomkhiqizo

Amathegi Omkhiqizo

Izibonelo Zokuhlola

1. Bheka i-Bragg diffraction bese ulinganisa i-engeli ye-Bragg diffraction

2. Bonisa i-acousto-optic modulation waveform

3. Qaphela isenzakalo sokuphambuka kwe-acousto-optic

4. Kala ukusebenza kahle kwe-acousto-optic diffraction kanye ne-bandwidth

5. Linganisa ijubane lokuhamba kwamagagasi e-ultrasound ngendlela ephakathi nendawo

6. Lingisa ukuxhumana kwe-optical usebenzisa indlela yokuguqula i-acousto-optic

Imininingwane

Incazelo	Imininingwane
Ukukhishwa kwe-He-Ne Laser	<1.5mW@632.8nm
I-LiNbO₃Ikristalu	I-electrode: I-electrode egobile engu-X ebekwe phezulu i-flatness <λ/8@633nm Ububanzi bokudlulisa: 420-520nm
I-Polarizer	I-Optical aperture Φ16mm /Ibanga lobude be-Wavelength 400-700nmIzinga lokugoqa 99.98%Ukudluliselwa 30% (i-paraxQllel); 0.0045% (eqondile)
Isitholi	I-PIN photocell
Ibhokisi Lamandla	I-amplitude ye-sine wave modulation: 0-300V i-tunable eqhubekayoI-voltage ye-DC bias ephumayo: 0-600V imvamisa ekhishwayo elungisekayo eqhubekayo: 1kHz
Isitimela Esibonakalayo	1m, i-Aluminium