Sisitimu Yekuyedza yeLPT-2 yeAcousto-Optic Effect

Tsananguro pfupi:

Kuedza kweAcousto-optic effect chizvarwa chitsva chekushandisa kwekuyedza kwemuviri mumakoreji nemayunivhesiti, kunoshandiswa kudzidza maitiro emuviri ekudyidzana kwemagetsi nemagetsi mukuyedza kwefizikisi yekutanga uye kuyedza kwehunyanzvi kwakabatana, uye kunoshandawo mukutsvagisa kwekuyedza kwekutaurirana kwemaziso uye kugadzirisa ruzivo rwemaziso. Inogona kuratidzwa nemaziso nedhijitari double oscilloscope (Sarudzo).

Kana mafungu e ultrasound achifamba muchinhu chinopenya, chinhu chinopenya chinosangana ne elastic strain ine shanduko dzinoitika nguva nenguva munzvimbo, zvichikonzera shanduko yakafanana mu refractive index yechinhu chinopenya. Nekuda kweizvozvo, kana chiedza chikapfuura nepakati pechinhu chine mafungu e ultrasound muchinhu chinopenya, chinokanganiswa nechinhu chinopenya chinoshanda se phase grating. Iyi ndiyo dzidziso huru ye acousto-optic effect.

Acousto-optic effect inopatsanurwa muzvikamu zviviri: normal acousto-optic effect uye anomalous acousto-optic effect. Mune isotropic medium, plane yepolarization ye incident light haichinjwe ne acousto-optic interaction (inonzi normal acousto-optic effect); mune anisotropic medium, plane yepolarization ye incident light inochinjwa ne acousto-optic interaction (inonzi anomalous acousto-optic effect). Anomalous acousto-optic effect ndiyo hwaro hwekugadzirwa kwe advanced acousto-optic deflectors uye tunable acousto-optic filters. Kusiyana ne normal acousto-optic effect, anomalous acousto-optic effect haigone kutsanangurwa neRaman-Nath diffraction. Zvisinei, nekushandisa parametric interaction concepts dzakadai se momentum matching uye mismatching mu nonlinear optics, dzidziso yakabatana ye acousto-optic interaction inogona kusimbiswa kutsanangura zvose normal uye anomalous acousto-optic effects. Kuedza kuri kuitwa muhurongwa uhwu kunongovhara chete mhedzisiro yakajairika yeacousto-optic mu isotropic media.

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Ruzivo rweChigadzirwa

Matagi eChigadzirwa

Mienzaniso yeKuedza

1. Tarisa Bragg diffraction uye yera angle yeBragg diffraction

2. Ratidza acousto-optic modulation waveform

3. Tarisa chiitiko che acousto-optic deflection

4. Kuyera kushanda zvakanaka kwe acousto-optic diffraction uye bandwidth

5. Yera kumhanya kwekufamba kwemafungu eultrasound muchikamu chepakati

6. Tevedzera kutaurirana kwemaziso uchishandisa nzira yekushandura manzwi (acousto-optic modulation technique)

Magadzirirwo

Tsananguro	Magadzirirwo
Kubuda kweLaser yeHe-Ne	<1.5mW@632.8nm
LiNbO₃Kiristaro	Electrode: X pamusoro pegoridhe rakaputirwa electrode yakatsetseka <λ/8@633nmNhamba yekutapurirana: 420-520nm
Polarizer	Kuvhura kweOptical Φ16mm /Wavelength Range 400-700nmPolarizing degree 99.98%Transmissivity 30% (paraxQllel); 0.0045% (yakamira)
Chinoongorora	PIN fotosero
Bhokisi reSimba	Kubuda kwe sine wave modulation amplitude: 0-300V inogadziriswa nguva dzose Kubuda kwe DC bias voltage: 0-600V inogadziriswa nguva dzose yekubuda: 1kHz
Njanji yeOptical	1m, Aruminiyamu