ʻŌnaehana Hoʻokolohua LPT-2 no ka hopena Acousto-Optic

Wehewehe Pōkole:

ʻO ka hoʻokolohua hopena Acousto-optic kahi hanauna hou o ka mea hana hoʻokolohua kino ma nā Koleke a me nā kulanui, hoʻohana ʻia e aʻo i ke kaʻina hana kino o ke kahua uila a me ka launa pū ʻana o ke kahua māmā i nā hoʻokolohua physics kumu a me nā hoʻokolohua ʻoihana e pili ana, a pili pū kekahi i ka noiʻi hoʻokolohua o ke kamaʻilio optical a me ka hana ʻike optical. Hiki ke hōʻike ʻia ma o ka oscilloscope pālua kikohoʻe (koho).

Ke hele nā nalu ultrasound i loko o kahi medium, ua pilikia ka medium i ke kaumaha elastic me nā loli manawa i ka manawa a me ka hakahaka, e hana ana i kahi loli manawa like i ka refractive index o ka medium. ʻO ka hopena, ke hele kahi kukuna o ke kukui ma waena o kahi medium i ke alo o nā nalu ultrasound i loko o ka medium, ua hoʻopuehu ʻia e ka medium e hana ana ma ke ʻano he grating phase. ʻO kēia ke kumumanaʻo kumu o ka hopena acousto-optic.

Ua hoʻokaʻawale ʻia ka hopena Acousto-optic i ka hopena acousto-optic maʻamau a me ka hopena acousto-optic anomalous. I loko o kahi medium isotropic, ʻaʻole i hoʻololi ʻia ka mokulele o ka polarization o ke kukui incident e ka pilina acousto-optic (i kapa ʻia ʻo ka hopena acousto-optic maʻamau); i loko o kahi medium anisotropic, ua hoʻololi ʻia ka mokulele o ka polarization o ke kukui incident e ka pilina acousto-optic (i kapa ʻia ʻo ka hopena acousto-optic anomalous). Hāʻawi ka hopena acousto-optic anomalous i ke kumu nui no ka hana ʻana o nā deflectors acousto-optic holomua a me nā kānana acousto-optic tunable. ʻAʻole e like me ka hopena acousto-optic maʻamau, ʻaʻole hiki ke wehewehe ʻia ka hopena acousto-optic anomalous e ka diffraction Raman-Nath. Eia nō naʻe, ma ka hoʻohana ʻana i nā manaʻo pilina parametric e like me ka momentum matching a me ka mismatching i nā optics nonlinear, hiki ke hoʻokumu ʻia kahi kumumanaʻo hoʻokahi o ka pilina acousto-optic e wehewehe i nā hopena acousto-optic maʻamau a me anomalous. Uhi wale nā hoʻokolohua ma kēia ʻōnaehana i ka hopena acousto-optic maʻamau i nā pāpaho isotropic.

E leka uila mai iā mākou

Nā kikoʻī huahana

Nā Lepili Huahana

Nā Laʻana Hoʻokolohua

1. E nānā i ka diffraction Bragg a e ana i ke kihi diffraction Bragg

2. Hōʻike i ke ʻano nalu modulation acousto-optic

3. E nānā i ka hanana deflection acousto-optic

4. E ana i ka pono o ka diffraction acousto-optic a me ka bandwidth

5. E ana i ka wikiwiki o ka hele ʻana o nā nalu ultrasound i loko o kahi medium

6. Hoʻohālike i ke kamaʻilio optical me ka hoʻohana ʻana i ke ʻano modulation acousto-optic

Nā kikoʻī

Wehewehena	Nā kikoʻī
Ka Hoʻopuka Laser He-Ne	<1.5mW@632.8nm
LiNbO₃Crystal	Uila: ʻO ka palahalaha o ka ʻili uila gula X <λ/8@633nm Ka laulā hoʻoili: 420-520nm
Mea hoʻopolokalamu	ʻO ka puka ʻōpae Φ16mm / Ka laulā o ka nalu 400-700nm Kekelē polarizing 99.98% Transmissivity 30% (paraxQllel); 0.0045% (kū)
Mea ʻike	PIN photocell
Pahu Mana	Ka nui o ka modulation nalu sine output: 0-300V hoʻololi mau ʻia ʻOutput DC bias voltage: 0-600V hoʻololi mau ʻia ka alapine hoʻopuka: 1kHz
Alanui ʻōlinolino	1m, Alumini