Filayen aikace-aikace na masu daidaitawa na acousto-optic (AOM Modulator)

Filayen aikace-aikace na masu daidaitawa na acousto-optic (AOM Modulator)

Ƙa'idar Acousto-optic modulator:

An acousto-optic modulator(AOM Modulator) yawanci ya ƙunshi lu'ulu'u na acousto-optic, transducers, na'urorin sha da direbobi. Fitar da siginar da aka daidaita daga direban yana aiki akan transducer a cikin nau'in siginar lantarki sannan kuma a canza shi zuwa igiyoyin ultrasonic wanda ya bambanta ta hanyar siginar lantarki. Lokacin da ultrasonic kalaman wucewa ta cikin acousto-optic matsakaici, yana haifar da matsawa na gida da elongation na matsakaici, samar da na roba iri. Wannan nau'in yana canzawa lokaci-lokaci tare da lokaci da sarari, yana haifar da matsakaici don nuna wani sabon abu mai yawa, kama da grating lokaci. Lokacin da haske ya ratsa cikin wannan matsakaicin da raƙuman ruwa na ultrasonic ke damun su, wani abu mai ban mamaki yana faruwa. Ana kiran wannan sabon abu da tasirin acousto-optic. Ƙarƙashin tasirin sauti da haske, mai ɗaukar hoto yana gyare-gyare kuma ya zama igiyoyin da aka daidaita wanda ke "dauke" bayanai.

Babban aikace-aikace na acousto-optic modulators:

Sauti da haske Q Canja (AOQS)

Canjin Q-switching acoutooptic (AOQS) yana aiki a cikin rami na Laser kuma an daidaita shi sosai.

Ana amfani da ƙimar Q a cikin rami don samar da laser pulsed tare da gajeriyar bugun jini da babban ƙarfin kololuwa. Yawancin lokaci ana amfani da AOQS don daidaita asarar katakon oda 0. Lokacin da aka kunna direban mitar rediyo na AOQS, hasken 0-oda, saboda rarrabuwar kawuna, yana hana laser a cikin rami daga oscillating, yana ƙaruwa da asarar rami da kuma toshe fitar da laser. Lokacin da aka kashe direban mitar rediyo na ɗan lokaci, ƙarfin gani da aka tara a cikin rami na Laser yana fitowa ta nau'in bugun jini, ta haka ne ke samar da Laser pulsed. Ana iya maimaita wannan tsari a kan ƙimar da ta wuce 100KHz. Lokacin da AOQS ke aiki a cikin jihar Bragg, akwai katako mai rarrabawa guda ɗaya kawai. in

Akwai maɓalli da yawa lokacin aiki a cikin jihar Raman-Niss.

2. Acousto-optic Modulator/Switch (AOM Modulator)

Modulator na Acousto-optic (AOM) ana amfani da su gabaɗaya a waje da rami na Laser don canza ƙarfin abin da ya faru Laser (amplitude modulation AM). Wannan na iya zama sauƙi mai sauƙi na ON/KASHE don saurin sauyawa ko daidaita matakin matakin don cimma ƙarfin daidaitawa. Yanayin daidaitawa ana ƙaddara ta nau'in direban RF kuma yana iya zama dijital (kunna/kashe) ko analog (sine, square wave, linear, bazuwar…). Gabaɗaya magana, injin RF na AOM yana ɗaukar ƙayyadaddun mitoci. Maɓallin maɓalli naAOM Modulatorshine lokacin tashi/faɗuwa, wanda ke bayyana ma'anar "gudu" da za'a iya cimmawa ko girman bandwidth na daidaitawa. Lokacin tashi/faɗuwa yayi daidai da diamita na katako a cikin na'ura. Don haka, don samun saurin hawan hawan, dole ne a sarrafa diamita na katako na Laser da ya faru. Ana iya amfani da AOM azaman mai rufewa (yin hawan keke kunnawa da kashewa a mitar saiti) da kuma azaman mai canzawa (mai sarrafa ƙarfin hasken da aka watsa). Ana samun daidaitawar Laser ta hanyar sarrafa mitar rediyo don haifar da raƙuman sauti a cikin kristal acousto-optic.

3. Acousto-optic deflector (AODF)

Deflector na acoutooptic (AODF) na iya cimma kyakkyawan aikin sikanin katako ta hanyar canza mitar tuƙi ta rediyo. Matsayin dubawa na iya zama matsayi bazuwar, ci gaba da sikanin layi da karkatar da ma'auni. Dangane da lu'ulu'u, tsayin raƙuman ruwa da girman katako, lokacin amsawa na 0.05 zuwa 15 microsecond da daidaitaccen iko na nRad za a iya cimma.

4. Acousto-optic mita Shifter (AOFS)

Bayan wucewa ta duk na'urorin acousto-optic, diffraction fitarwa katako na Laser katako zai samar da mitar motsi. Mai sauya mitar acousto-optic (AOFS) ƙaƙƙarfan na'ura ce da aka ƙera musamman don cimma canjin mitar. Dangane da zaɓaɓɓun kusurwoyi daban-daban na aukuwa, AOFS za ta motsa mitar sama ko ƙasa ta mitar siginar mitar rediyo da aka yi amfani da ita, kuma ana iya jefa na'urori biyu ko fiye da haka don cimma jimla ko bambancin haɗin mitar. Kayayyakin AOFS suna ɗaukar kusurwoyi masu ɗaukar sauti na musamman waɗanda aka ƙera, waɗanda zasu iya rage girman tunanin sauti da haɓaka haɓakar AOFS.

5. Acousto-optic Daidaitacce Filter (AOTF)

Fitar mai kunnawa na gani (AOTF) ƙaƙƙarfan yanayi ce, ta hanyar lantarki da kuma matatar fasfo na gani da ba ka so. Ana iya amfani da shi don sauri da zazzagewa zaɓe takamaiman tsayin raƙuman raƙuman raƙuman ruwa daga maɓuɓɓugan watsa labarai ko manyan layi. Diffraction yana faruwa ne lokacin da takamaiman yanayin daidaitawa suka hadu a tsakanin katako mai sauti. Sabili da haka, yana yiwuwa a sarrafa sigogin tacewa ta hanyar lantarki (kamar tsayin raƙuman ruwa, zurfin daidaitawa, har ma da bandwidth), ta hakan yana samar da sauri (yawanci microseconds), ƙarfi, da bazuwar samun damar tace gani.