Amfani da Laser Semiconductor Mai Sauƙi Guda ɗaya a Daidaita Ma'aunin Tsangwama na Hasken Raƙuman Ruwa

Amfani daLaser Semiconductor Mai Sauƙi Guda ƊayaA Daidaita Ma'aunin Tsangwama Tsakanin Raƙuman Haske
Amfani da mita ɗayaLaser na semiconductorA fannin auna daidaito kamar su na'urorin sadarwa na fiber optic da na'urorin sadarwa na sauraron ƙasa, an yi nazari sosai kan mahimmancin tasirin aikin laser akan aikin tsarin interferometer.

Tsarin asali da ƙa'idar aiki na tsarin: Tsarin hydrophone na fiber optic galibi ya ƙunshi kan abin ji da kuma na'urar aunawa (wanda ake amfani da shi wajen auna MZ interferometer a matsayin misali). Babban ƙa'idar ita ce siginar sauti (matsin sauti Δ p) tana aiki akan kan abin ji, tana haifar da canje-canje a cikin tsayi da ma'aunin haske na zaren abin ji da aka naɗe a kusa da silinda mai rami, ta haka ne ke haifar da canje-canje a cikin hanyar gani. Wannan ƙaramin canjin hanyar gani (watau canjin lokaci) ana gano shi da babban ƙarfin ji ta hanyar na'urar aunawa.

1. Kan firikwensin: Babban aikinta shine canza rawar sauti zuwa canje-canje a cikin hanyar gani ta hanyar interferometer. Ma'aunin firikwensin s yana da alaƙa da abubuwa kamar tsawon zare L, kuma zare masu ji na tsawon lokaci suna da amfani don inganta firikwensin tsarin.
2. Mai auna zafin jiki: Ita ce "mafi kyawun makami" don gano ƙananan canje-canje a cikin yanayi. Ƙarfin hasken fitarwa yana da alaƙa da cosine tare da bambancin lokaci. Ta hanyar daidaita yanayin yanayin φ ₀ a wurin aiki na orthogonal ((m+1/2) π), tsarin zai iya cimma mafi girman ƙarfin ganowa.
3. Mahimman sigogin tushen haske waɗanda ke shafar aikin tsarin: Labarin ya mayar da hankali kan nazarin iyakokin aikin laser akan cimma babban ƙuduri (tare da maƙasudin ≤ 1 μ rad).
4. LaserHayaniyar mita da faɗin layi: Hayaniyar mitar laser na iya haifar da hayaniyar matakin tsangwama, ta haka rage ganin gefunan tsangwama. Ga mai aunawa mai bambancin hanyar gani na kimanin mita 1, don cimma ƙudurin mataki na 1 μ rad, faɗin layin laser ɗin yana buƙatar ƙasa da kusan 30 Hz. Wannan babban buƙata ce don daidaiton mitartushen haske.
5. Hayaniyar ƙarfin Laser: Hayaniyar ƙarfin laser (RIN) za ta koma kai tsaye zuwa kuskuren mataki na siginar tsangwama. Don cimma ƙudurin mataki na 1 μ rad a ƙarfin hasken ganowa na yau da kullun (~100 μ W), RIN na laser ɗin yana buƙatar rage shi zuwa ƙasa da -120 dB. Wannan babban buƙata ne don kwanciyar hankali na ƙarfin tushen haske.

A taƙaice, ta hanyar nazarin tsarin hydrophone na fiber optic, an ƙara yin cikakken bayani game da ƙa'idodin tushen haske na tsakiya - laser semiconductor mita ɗaya - dangane da faɗin layi mai faɗi sosai (tsayin mita mai yawa) da kuma ƙaramar ƙarar ƙarfi a cikin ma'aunin daidaito bisa ƙa'idar tsangwama, kuma an gabatar da ƙalubalen daidaita mitar laser da ake fuskanta a manyan aikace-aikacen tsarin.