Ukusetyenziswa kweI-Laser ye-Semiconductor ye-Frequency enyeekuLinganisweni okuchanekileyo kokuphazamiseka kwamaza okukhanya
Ukusetyenziswa kwefrikhwensi enyei-laser ye-semiconductorKwimimandla yokulinganisa ngokuchanekileyo njenge-fiber optic hydrophones kunye ne-ground listening interferometers kuyaxoxwa ngayo, kwaye impembelelo ephambili yokusebenza kwe-laser ekusebenzeni kweenkqubo ze-interferometer ihlalutywa nzulu.
Ulwakhiwo oluphambili kunye nomgaqo wokusebenza kwenkqubo: Inkqubo ye-fiber optic hydrophone yenziwe kakhulu yintloko yokuva kunye ne-interferometer (ukuthatha i-MZ interferometer njengomzekelo). Umgaqo osisiseko kukuba isignali yesandi (uxinzelelo lwesandi Δ p) isebenza kwintloko yokuva, ibangela utshintsho kubude kunye nesalathisi sokurhawuzelelwa kwefayibha yokuva ejikeleze isilinda esingenanto, ngaloo ndlela izisa utshintsho kwindlela yokuva. Olu tshintsho lwendlela encinci yokuva (oko kukuthi utshintsho lwesigaba) lufunyanwa ngovakalelo oluphezulu yi-interferometer.
1. Intloko yenzwa: Umsebenzi wayo oyintloko kukuguqula ukungcangcazela kwesandi kube lutshintsho kwindlela yokukhanya ye-interferometer. I-sensitivity coefficient s inxulumene nezinto ezifana nobude befayibha L, kwaye iifayibha eziva ixesha elide ziluncedo ekuphuculeni uvakalelo lwenkqubo.
2. I-Interferometer: "Sisixhobo esingcono kakhulu" sokufumanisa utshintsho oluncinci lwesigaba. Ubungakanani bokukhanya okuphumayo bunobudlelwane be-cosine nomahluko wesigaba. Ngokuzinzisa i-static phase bias φ ₀ kwindawo yokusebenza ye-orthogonal ((m+1/2) π), inkqubo inokufikelela kubuninzi bokubona.
3. Iiparamitha zomthombo wokukhanya eziphambili ezichaphazela ukusebenza kwenkqubo: Eli nqaku ligxile ekuhlalutyeni imida yokusebenza kwelaser ekufezekiseni isisombululo sesigaba esiphezulu (kujoliswe kwi-≤ 1 μ rad).
4. Ilezaingxolo yefrikhwensi kunye nobubanzi bomgca: Ingxolo yefrikhwensi yelaser inokubangela ingxolo yefrikhwensi yokuphazamiseka, ngaloo ndlela inciphisa ukubonakala kwefrikhwensi yokuphazamiseka. Kwi-interferometer enomahluko wendlela yokukhanya omalunga nemitha e-1, ukuze kufezekiswe isisombululo sefrikhwensi ye-1 μ, ububanzi bomgca welaser kufuneka bube ngaphantsi kwe-30 Hz. Le yimfuneko ephezulu kakhulu yokuzinza kwefrikhwensi yeumthombo wokukhanya.
5. Ingxolo yokuqina kwelaser: Ingxolo yokuqina kwelaser (RIN) iya kuguqulwa ngokuthe ngqo ibe yimpazamo yesigaba sesignali yokuphazamiseka. Ukuze kufezekiswe isisombululo sesigaba se-1 μ rad kumandla okukhanya okuqhelekileyo (~100 μ W), i-RIN yelaser kufuneka incitshiswe ibe ngaphantsi kwe--120 dB. Le yimfuneko ephezulu kakhulu yokuzinza kokuqina komthombo wokukhanya.
Ngamafutshane, ngokuhlalutya inkqubo ye-fiber optic hydrophone, iimfuno ezingqongqo zomthombo wokukhanya oyintloko - i-single frequency semiconductor laser - ngokubhekiselele kububanzi obuncinci kakhulu (uzinzo oluphezulu lwe-frequency) kunye nengxolo ephantsi kakhulu ekulinganisweni ngokuchanekileyo ngokusekelwe kumgaqo wokuphazamiseka ziyachazwa, kwaye imingeni yokuzinzisa i-laser frequency ejongene nayo kwiinkqubo ezinkulu zenkqubo iyavezwa.
Ixesha leposi: Epreli-07-2026