Yadda ake amfani da na'urar daidaita haske ta acousto a matsayin makullin gani

Yadda ake amfani da na'urar daidaita haske ta acousto optic modulator (AOM modulator) a matsayin na'urar canza haske
1. Bayani da yanayin ci gaban fasaha
1.1 Asalin Laser: A shekarar 1960, Theodore Meiman ya ƙirƙiro laser na farko mai amfani da ruby, wanda hakan ya nuna haihuwar fasahar laser.
1.2 Ci gaban Laser: Daga baya, nau'ikan laser daban-daban sun bayyana, kamar laser na gas (kamar helium neon lasers), laser semiconductor, da lasers masu ƙarfi (kamar laser YAG lasers), a hankali suna faɗaɗa iyakokin aikace-aikacen su zuwa fannoni na soja, masana'antu, da likitanci.
1.3 Gabatarwar Bukatun Ciki: Laser ɗin yana buƙatar ingantaccen fitarwa na wutar lantarki, kuma a aikace-aikace da yawa, laser ɗin ba zai iya ci gaba da haskaka abin da ake so ba. Don guje wa sake sauyawar laser ɗin da kansa, ana gabatar da maɓallin gani na waje don sarrafa kunnawa/kashe laser daidai.

2. Ka'idar aiki na acousto optic modulator (AOM modulator)
AOM na'urar gani ce da ke amfani da tasirin acousto-optic, inda raƙuman sauti ke yaɗuwa ta cikin wani matsakaici don samar da canje-canje na ma'aunin refractive lokaci-lokaci, ta haka ne ke daidaita halayen raƙuman haske da ke ratsawa ta cikin matsakaici, kamar ƙarfi, mita, da alkibla. A halin yanzu, an mayar da hankali kan hanyoyi guda biyu na diffraction:
1.1 Rarrabawar Bragg: Mafi yawan abu shine cewa raƙuman haske da sauti suna samar da wani kusurwa na musamman, kuma kuzarin rarrabawa galibi yana taruwa ne a cikin hasken farko, kamar grating na sitiriyo. Wannan yanayin galibi ana amfani da shi ne don aikace-aikacen maɓallan gani.
1.2 Ramin Raman: Alkiblar yaɗuwar haske da raƙuman sauti suna tsaye a tsaye, kuma hasken da aka watsa yana nuna rarraba mai daidaito a matakai da yawa, kama da grating mai siffar murabba'i.
3. Yanayin aiki na AOM modulator azaman maɓallin gani
3.1 AOM ba ya ɗora siginar (ba ya aiki): Laser ɗin yana wucewa kai tsaye ta cikin (hasken matakin 0) kuma madubin haske yana shayewa a cikin hanyar gani, ba tare da fitarwa mai tasiri ba.
3.2 Siginar lodawa ta AOM (yana aiki): Ana samar da diffraction, kuma ana fitar da hasken farko a wani kusurwa kuma yana shiga hanyar gani ta gaba don amfani.
Ta hanyar sarrafa ko na'urar AOM tana loda sigina, ana iya cimma saurin sauyawa da daidaita laser, ta hanyar biyan yanayin aikace-aikacen da ke buƙatar sarrafa lokacin hasken laser.
Baya ga amfani da shi azaman maɓallin gani, AOM kuma tana iya amfani da matakan haske guda biyu don samar da tsangwama da samar da siginar bugun gani, wanda za'a iya amfani da shi a cikin aunawa da sauran fannoni. Bukatar aiki don ingantaccen fitowar wutar lantarki ta laser ya haifar da fasahar sauya haske, kuma masu daidaita haske na acousto (AOM modulator) sun dogara ne akan ƙa'ida da aikace-aikacen aikin sauya haske ta amfani da tasirin acousto-optic, musamman yanayin diffraction na Bragg.