Ukulinganiswa kobubanzi bomgca welaser

Ukulinganiswa kobubanzi bomgca welaser
Kukho iindlela ezininzi zokulinganisaububanzi bomgca weleza:
1. Xa ububanzi bomgca welaser bukhulu (> 10 GHz, xa iindlela ezininzi zijikeleza kwiiresonator ezininzi zelaser), iispectrometer zemveli ezisebenzisa iigratings ze-diffraction zingasetyenziselwa ukulinganisa. Nangona kunjalo, le ndlela kunzima ukufikelela kwisisombululo esiphezulu sefrikhwensi.
2. Enye indlela kukusebenzisa i-frequency discriminator ukuguqula i-frequency fluctuations ibe yi-intensity fluctuations. I-discriminator ingaba yi-interferometer engalinganiyo okanye i-high-precision reference cavity. Isisombululo sale ndlela yokulinganisa naso silinganiselwe.
3. Iilaser ezine-frequency enye zihlala zisebenzisa indlela ye-heterodyne, erekhoda i-beat frequency ye-laser output frequency kunye ne-frequency yayo emva kwe-offset kunye ne-delay.
4. Kwimigca ebanzi engama-hertz angamakhulu ambalwa, indlela yendabuko ye-heterodyne kunzima ukuyisebenzisa ngenxa yesidingo sobude obukhulu bokulibaziseka. I-loop fiber loop kunye ne-fiber amplifier eyakhelwe ngaphakathi ingasetyenziselwa ukwandisa ubude bokulibaziseka.
5. Ngokurekhoda isantya sokubetha kwee-laser ezimbini ezizimeleyo, isisombululo esiphezulu kakhulu sinokufezekiswa. Kule meko, ingxolo ye-laser ebhekisayo iphantsi kakhulu kuneyei-laser elinganisiweyo, okanye izalathisi zabo zokusebenza ziyafana. Iilophu zokutshixa okanye iindlela ezisekelwe ekurekhodweni kwezibalo ukuze kubalwe umahluko wefrikhwensi ekhawulezileyo zingasetyenziswa. Le ndlela ilula kakhulu kwaye izinzile, kodwa ifuna enye ilaser (enefrikhwensi ekufutshane nei-laser elinganisiweyoUkuba ububanzi bomgca obulinganisiweyo bufuna uluhlu olubanzi lwe-spectral, i-frequency comb ilula kakhulu.
Ukulinganiswa kwamaza okukhanya kudla ngokufuna ukubonelela ngereferensi ethile yamaza (okanye ixesha) kwindawo ethile.iileyiza ezinobubanzi obumxinwa, kufuneka umqadi omnye kuphela wesalathiso ukuze kubonelelwe ngokuchanekileyo okwaneleyo. Indlela ye-heterodyne ifumana isalathiso se-frequency ngokusebenzisa ukulibaziseka kwexesha elaneleyo kwisixhobo sovavanyo ngokwaso. Eyona nto ifanelekileyo kukuba, ukuhambelana kwexesha phakathi komqadi wokuqala kunye nomqadi wawo olibazisekileyo kufuneka kuphetshwe. Ke ngoko, iifayibha ezinde ze-optical zihlala zisetyenziswa. Nangona kunjalo, ngenxa yokuguquguquka okuzinzileyo kunye neziphumo ze-acoustic, iifayibha ezinde ze-optical zizisa ingxolo eyongezelelweyo yesigaba.