Indlela ephambili yobugcisa ye-laser ezihlengahlengiswayo ezinobubanzi obumxinwa

Indlela ephambili yobugcisaiileser ezinobubanzi obumxinwa obuhlengahlengiswayo

Iindlela eziphambili zobugcisa zokulungiswaiileyiza ezinobubanzi obumxinwaenemingxuma yangaphandle ye-semiconductor

Iilaser ezikwaziyo ukucutshungulwa zibe sisiseko sezicelo ezibanzi kwiinkalo ezifana nefiziksi ye-atomic, i-spectroscopy, ulwazi lwe-quantum, unxibelelwano oluhambelanayo, ukuqonda okukude, kunye nokulinganisa ngokuchanekileyo. Kule mimandla, iilaser ezilula, ezingabizi kakhulu, ezibanzi kunye ne-tuning range ziya kuqhubeka nokuqhuba usetyenziso olutsha lwale teknoloji.

Kwiminyaka engama-50 edlulileyo, imbali ye-umthombo wokukhanya ohlengahlengiswayoI-TLS Laser ibonakalise kakhulu uphuhliso lwetekhnoloji yelaser. Iilaser zokuqala zedayi zithathelwe indawo ziilaser ze-diode zangaphandle (ii-ECDL), ngelixa iinkqubo zamandla aphezulu zilawulwa ziilaser ze-solid-state ezinokuhlengahlengiswa (ezifana neelaser ze-titanium-sapphire) okanye iilaser ze-Nd:YAG eziguqulwe rhoqo zisebenzisa ii-optical parametric oscillators (i-OPO). Iilaser ze-diode ezingenazo ii-outer cavities ezizinzileyo zizalise imarike engabizi kakhulu nesebenzayo kancinci ngee-DFB Laser kunye nee-DBR diodes zorhwebo, ezinobubanzi bomgca obuncinci njenge-500kHz. Kutshanje, iilaser zefayibha kunye neelaser zefayibha eziguquguqukayo ziqalile ukuthatha indawo yeenkqubo ezininzi ze-solid-state ngoyilo olwahlukileyo, zibonelela ngamandla aphezulu kunye nokulungiswa okukhulu, okanye ububanzi bomgca obuncinci. Kule mihla, ukuvela kwee-frequency combs kwenza ukuba iilaser ezizinzileyo rhoqo zifezekiswe nangaliphi na ubude bomda ngelixa zigcina uzinzo oluhle kunye nokuchaneka. Nangona kunjalo, nangona oku, i-outer cavityi-laser ye-semiconductorisagcina isikhundla sayo njengomthombo wokukhanya osetyenziswa rhoqo kwiilebhu ezininzi ngenxa yobulula bayo, imisebenzi emininzi, ukusebenza kwayo okuhloniphekileyo kunye neendleko eziphantsi kakhulu.

Okwangoku, iilaser ezikwaziyo ukulungiswa zibe mfutshane ezinee-semiconductors zangaphandle ziye zasetyenziswa kakhulu kwi:

Ukupholisa kunye nokubamba nge-laser

Ukufuma kweBose-Einstein

I-Quantum Optics: Ukukhanya okucinezelweyo

Ukukhanya kwe-electromagnetic okubonakalayo kunye nokukhanya okucothayo

Imigangatho yexesha kunye nokuphindaphinda

I-spectroscopy yelaser

Iilaser ezinabileyo ezinobubanzi obuncinci zihlala zenziwe yi-controller, i-laser diode kunye ne-frequency selection module. Umzekelo, ii-gratings ezisetyenziselwa ukukhetha kunye nokulungisa i-laser frequency, okanye izihluzi ezisekelwe kwisakhiwo seliso lekati, njl. Iimpawu ezibalulekileyo zeelaser ezinabileyo ezinobubanzi obuncinci ezine-external cavity semiconductors ziquka i-narrow laser linewidth, i-low frequency drift, kunye ne-wide tuning range, njl. Kwaye ezi mpawu zibalaseleyo zixhomekeke kwi-laser drive circuit egqwesileyo kakhulu, uzinzo olupheleleyo lwe-mechanical lwe-laser, kunye nomgaqo wokukhetha i-frequency. Ukufezekisa uzinzo oluphezulu lwe-frequency lwe-laser, iintlobo ezahlukeneyo zeemodyuli ze-laser frequency-locking zingongezwa. Umzekelo, ngokusebenzisa itekhnoloji ye-PDH frequency stabilization ukutshixa ubude be-laser kwi-optical super-stable cavity, i-linewidth ye-laser inokuncitshiswa ukuya kwinqanaba le-1 Hz, kwaye uzinzo lwe-frequency lunokufikelela kwi-< 3× 10-15 @ 1 s.