Mpaghara ngwa nke acousto-optic modulators (AOM Modulator)
Ụkpụrụ nke Acousto-optic modulator:
An acousto optic modulator(AOM Modulator) bụ nke kristal acousto-optic, transducers, ngwaọrụ absorption na ndị ọkwọ ụgbọ ala mejupụtara. Ihe ngosi mgbama a gbanwere site na onye ọkwọ ụgbọ ala na-arụ ọrụ na transducer n'ụdị mgbaàmà eletrik wee gbanwee n'ime ebili mmiri ultrasonic nke dịgasị iche n'ụdị mgbaàmà eletrik. Mgbe ultrasonic ebili mmiri na-agafe na acousto-optic media, ọ na-akpata mkpakọ mpaghara na elongation nke ọkara, na-emepụta ihe na-agbanwe agbanwe. Nsogbu a na-agbanwe kwa oge site na oge na ohere, na-eme ka onye na-ahụ maka usoro ahụ gosipụta ihe dị iche iche njupụta, dị ka grating nke oge. Mgbe ọkụ na-agafe na nke a nke ebili mmiri ultrasonic na-akpaghasị, ihe dị iche iche na-eme. A na-akpọ ihe omume a mmetụta acousto-optic. N'okpuru mmetụta nke ụda na ìhè, a na-emegharị onye na-ebu ihe anya ma ghọọ ebili mmiri na-emegharị nke "na-ebu" ozi.
Ngwa ndị bụ isi nke acousto-optic modulators:
Ụda na ọkụ Q Switch (AOQS)
Mgbanwe acoutooptic Q-switching (AOQS) na-arụ ọrụ n'ime oghere laser ma na-agbazikwa ya nke ọma.
A na-eji uru Q dị n'ime oghere ahụ mepụta lasers pulsed nwere mkpirisi mkpirisi na ike dị elu. A na-ejikarị AOQS mee ihe iji gbanwee mfu nke ọkụ ọkụ 0. Mgbe agbanyere onye ọkwọ ụgbọ ala redio nke AOQS, ọkụ 0-usoro, n'ihi nhụsianya, na-egbochi laser n'ime oghere ka ọ na-agbagharị, na-abawanye ụba oghere na igbochi mmepụta laser. Mgbe agbanyụrụ onye na-anya ugboro redio obere oge, a na-ebunye ike anya n'ime oghere laser n'ụdị usu, si otú ahụ na-emepụta laser pulsed. Enwere ike ịmegharị usoro a na ọnụego karịrị 100KHz. Mgbe AOQS na-arụ ọrụ na steeti Bragg, enwere naanị otu mgbawa ọkụ. n'ime
Enwere otutu ihe ndọpụ uche mgbe ị na-arụ ọrụ na steeti Raman-Niss.
2. Acousto-optic Modulator/Switch (AOM Modulator)
Acousto-optic modulators (AOM) a na-ejikarị na mpụga oghere laser gbanwee ike nke laser merenụ (amplitude modulation AM). Nke a nwere ike ịbụ mgbanwe mgbanwe ON/ Gbanyụọ dị mfe maka ngbanwe ngwa ngwa ma ọ bụ mgbanwe ọkwa mgbanwe iji nweta mgbanwe mgbanwe ike. A na-ekpebi ụdị mgbanwe ahụ site n'ụdị ọkwọ ụgbọ ala RF ma nwee ike ịbụ dijitalụ (gbanyụọ/ gbanyụọ) ma ọ bụ analọgụ (sine, square wave, linear, random…). N'ikwu okwu n'ozuzu, draịva RF nke AOM na-anabata oge a kapịrị ọnụ. Igodo oke nkeAOM Modulatorbụ ịrị elu / ọdịda oge, nke na-akọwapụta "ọsọ" ma ọ bụ njupụta modulation bandwit nke modulation. Oge ịrị elu/ọdịda dabara na dayameta beam n'ime modulator. Ya mere, iji nweta oge mgbago ngwa ngwa, a ghaghị ịchịkwa dayameta nke ọkụ laser merenụ. Enwere ike iji AOM mee ihe dị ka ihe nkpuchi (ịgba ígwè na gbanyụọ na oge a na-esetịpụ) yana kwa dị ka ihe na-agbanwe agbanwe (na-achịkwa ike nke ọkụ a na-ebunye). A na-enweta ngbanwe nke laser site na ịchịkwa ugboro redio iji mee ka ebili mmiri dị na kristal acousto-optic.
3. Acousto-optic deflector (AODF)
The acoutooptic deflector (AODF) nwere ike nweta nlegharị anya ọkụ ọkụ na-atọ ụtọ site n'ịgbanwe ugboro mbanye redio. Ọnọdụ nyocha nwere ike ịbụ ọnọdụ enweghị usoro, nyocha ahịrị na-aga n'ihu na ngbanwe n'usoro n'usoro. Dabere na kristal, ogologo wavelength na beam size, enwere ike nweta oge nzaghachi nke 0.05 ruo 15 microseconds na njikwa ọnọdụ ziri ezi nke nRad.
4. Acousto-optic ugboro Shifter (AOFS)
Mgbe ị gafechara ngwaọrụ niile acousto-optic, ihe ndọpụ uche nke ọkụ laser ga-emepụta mgbanwe ugboro ugboro. Onye na-emegharị ugboro ugboro acousto-optic (AOFS) bụ ngwaọrụ kọmpat emebere ka ọ nweta mgbanwe ugboro ugboro. Dabere n'akụkụ ihe omume dị iche iche ahọpụtara, AOFS ga-atụgharị ugboro elu ma ọ bụ ala site na ugboro nke mgbaàmà ugboro redio etinyere, yana ngwaọrụ abụọ ma ọ bụ karịa nwere ike ịgbanye iji nweta nchikota ma ọ bụ ihe dị iche. Ngwaahịa AOFS na-anakwere akụkụ ihe mkpuchi ụda ahaziri iche, nke nwere ike belata ntụgharị ụda ma welie arụmọrụ nke AOFS.
5. Acousto-optic Adjustable Filter (AOTF)
Ihe nzacha acousto-optic tunable (AOTF) bụ steeti siri ike, a na-agwa elektrọnik yana nzacha passband ngwa anya enwetaghị usoro. Enwere ike iji ya mee ngwa ngwa na ike họrọ ogologo wavelength dị iche iche sitere na brọdband ma ọ bụ isi mmalite ọtụtụ ahịrị. Mgbagwoju anya na-apụta mgbe a na-ezute ọnọdụ ndakọrịta kpọmkwem n'etiti oghere ụda olu. Ya mere, ọ ga-ekwe omume ijikwa usoro nzacha elektrọnik (dị ka ogologo ikuku, omimi mgbanwe, na ọbụna bandwit), si otú ahụ na-enye ngwa ngwa (na-abụkarị microseconds), ike ike na enweghị ohere ịnweta nzacha anya.
Oge nzipu: Mee-26-2025