Ngalaba ngwa nke acousto-optic modulators (AOM Modulator)

Ngalaba ngwa nke acousto-optic modulators (AOM Modulator)

Ụkpụrụ nke Acousto-optic modulator:

An ihe modulator acousto-optic(AOM Modulator) na-abụkarị kristal acousto-optic, transducers, ngwaọrụ absorption na draịva. Ihe mgbaàmà modulated sitere na onye ọkwọ ụgbọala na-arụ ọrụ na transducer n'ụdị mgbaàmà eletriki wee gbanwee ya ka ọ bụrụ ebili mmiri ultrasonic nke na-agbanwe agbanwe n'ụdị mgbaàmà eletriki. Mgbe ebili mmiri ultrasonic gafere na acousto-optic media, ọ na-akpata mkpakọ mpaghara na ịgbatị nke etiti ahụ, na-emepụta nrụgide na-agbanwe agbanwe. Nsogbu a na-agbanwe mgbe niile ka oge na oghere na-aga, na-eme ka etiti ahụ gosipụta ihe dị iche iche na-agbanwe agbanwe, dị ka grating nke usoro. Mgbe ìhè gafere na etiti a nke ebili mmiri ultrasonic na-akpaghasị, ihe dị iche iche na-eme. A na-akpọ ihe a mmetụta acousto-optic. N'okpuru mmetụta nke ụda na ìhè, a na-agbanwe ihe na-ebu ngwa anya ma ghọọ ebili mmiri modulated nke "na-ebu" ozi.

Isi ihe eji eme ihe na acousto-optic modulators:

Ụda na ọkụ Q Switch (AOQS)

Mgbanwe Q-switching acoutooptic (AOQS) na-arụ ọrụ n'ime oghere laser ma na-agbanwe ya nke ọma.

A na-eji uru Q dị n'ime oghere ahụ emepụta laser pulsed nwere obere pulses na ike elu dị elu. A na-ejikarị AOQS emezi mfu nke 0-order bread. Mgbe agbanyere draịva redio nke AOQS, ọkụ 0-order, n'ihi diffraction, na-egbochi laser dị n'ime oghere ahụ ịgbagharị, na-eme ka mfu oghere dịkwuo elu ma na-egbochi mmepụta laser. Mgbe agbanyụrụ draịva redio frequency nwa oge, a na-ewepụta ike anya a na-anakọtara na oghere laser n'ụdị pulses, si otú a na-emepụta laser pulsed. Enwere ike imeghachi usoro a na ọnụego gafere 100KHz. Mgbe AOQS na-arụ ọrụ na steeti Bragg, enwere naanị otu radi diffraction. na

E nwere ọtụtụ ihe na-eme ka ọ dị iche iche mgbe a na-arụ ọrụ na steeti Raman-Niss.

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

Ndị na-eme ka ihe na-emegharị anya (acousto-optic modulators)AOM) a na-ejikarị eme ihe n'èzí oghere laser iji gbanwee ike nke laser merenụ (modulation amplitude AM). Nke a nwere ike ịbụ modulation ON/OFF dị mfe maka mgbanwe ngwa ngwa ma ọ bụ modulation ọkwa mgbanwe iji nweta modulation ike. A na-ekpebi ụdị modulation site na ụdị RF draịva ma nwee ike ịbụ dijitalụ (gbanye/gbanyụọ) ma ọ bụ analog (sine, square wave, linear, random…). N'ikwu ya n'ozuzu, draịva RF nke AOM na-anabata ugboro ole a kapịrị ọnụ. Paramita isi nkeIhe nhazi AOMbụ oge mmụba/mbelata, nke na-akọwa "ọsọ" ma ọ bụ oke mgbanwe nke modulation. Oge mmụba/mbelata kwekọrọ na dayameta ìhè dị n'ime modulator ahụ. Ya mere, iji nweta oge ịrị elu ngwa ngwa, a ga-achịkwa dayameta nke ihe merenụ nke laser. Enwere ike iji AOM dị ka ihe mkpuchi (na-agbagharị ma na-agbanyụ na ugboro ole edobere) yana dịka ihe na-agbanwe agbanwe (na-achịkwa ike nke ìhè ebufere n'ụzọ dị iche iche). A na-enweta mgbanwe laser site na ijikwa ugboro redio iji mee ka ebili mmiri ụda dị na kristal acousto-optic.

3. Acousto-optic deflector (AODF)

Ihe na-eme ka acoutooptic deflector (AODF) nwee ike ime ka a na-enyocha ọkụ ọkụ site n'ịgbanwe ugboro redio draịva. Ọnọdụ nyocha ahụ nwere ike ịbụ ọnọdụ enweghị usoro, nyocha ahịrị na-aga n'ihu na ntụgharị isi ihe n'usoro. Dabere na kristal, ogologo ebili mmiri na nha ụdọ, enwere ike nweta oge nzaghachi nke 0.05 ruo 15 microsekọnd na njikwa ọnọdụ ziri ezi nke nRad.

4. Mgbanwe ugboro ugboro nke Acousto-optic (AOFS)

Mgbe ọ gafere ngwaọrụ acousto-optic niile, ìhè mmepụta diffraction nke laser beam ga-emepụta mgbanwe ugboro. Mgbanwe ugboro acousto-optic (AOFS) bụ ngwaọrụ dị obere nke e mere kpọmkwem iji nweta mgbanwe ugboro ugboro. Dabere na akụkụ ihe omume dị iche iche ahọpụtara, AOFS ga-agbanwe ugboro ugboro elu ma ọ bụ ala site na ugboro ugboro nke mgbaàmà ugboro redio etinyere, enwere ike ịgbasa ngwaọrụ abụọ ma ọ bụ karịa iji nweta njikọta ugboro ugboro ma ọ bụ ọdịiche. Ngwaahịa AOFS na-eji akụkụ absorber acoustic emebere nke ọma, nke nwere ike ibelata ntụgharị ụda ma melite arụmọrụ nke AOFS.

5. Ihe nzacha a na-agbanwe agbanwe nke Acousto-optic (AOTF)

Ihe nzacha acousto-optic (AOTF) bụ ihe nzacha pasband optical siri ike, nke e ji eletrọniki lebara anya ma nwee ike ịnweta n'enweghị usoro. Enwere ike iji ya họrọ ogologo ebili mmiri kpọmkwem site na isi mmalite broadband ma ọ bụ ọtụtụ ahịrị. Diffraction na-eme mgbe e zutere ọnọdụ dakọtara kpọmkwem n'etiti oghere acoustic. Ya mere, ọ ga-ekwe omume ijikwa paramita nzacha eletrọniki (dịka ogologo ebili mmiri, omimi modulation, na ọbụna bandwidth), si otú a na-enye ohere ngwa ngwa (na-abụkarị microsekọnd), ike, na enweghị usoro na nzacha anya.