Unxibelelwano lwe-Quantum: ii-laser ezibanzi zomgca omxinwa

Unxibelelwano lwe-quantum:iileyiza ezinobubanzi obumxinwa

Ileza yobubanzi bomgca obumxinwaluhlobo lwelaser oluneempawu ezikhethekileyo ze-optical, olubonakaliswa kukwazi ukuvelisa umqadi welaser onobubanzi obuncinci kakhulu be-optical linewidth (oko kukuthi, i-spectrum encinci). Ububanzi bomgca welaser enobubanzi obuncinci bubhekisa kububanzi be-spectrum yayo, edla ngokubonakaliswa kwi-bandwidth ngaphakathi kwe-unit frequency, kwaye obu bubanzi bukwaziwa ngokuba "bububanzi bomgca we-spectral" okanye "ububanzi bomgca". Iilaser ezinobubanzi obuncinci zinobubanzi bomgca obuncinci, ngokuqhelekileyo phakathi kwamakhulu ambalwa e-kilohertz (kHz) kunye nee-megahertz ezimbalwa (MHz), ezincinci kakhulu kunobubanzi bomgca we-spectral wee-laser eziqhelekileyo.

Uhlu ngokwesakhiwo somngxuma:

1. Iilaser zefayibha ezikwi-linear cavity zahlulwe zaba yi-distributed Bragg reflection type (DBR Laser) kunye ne-distributed feedback type (I-DFB Laser) izakhiwo ezimbini. I-laser ephumayo ye-laser zombini ilula kakhulu kwaye inobubanzi obuncinci kunye nengxolo ephantsi. I-laser ye-DFB fiber inokufikelela zombini impendulo ye-laser kunyeilezaukukhetha imowudi, ngoko ke uzinzo lwefrikhwensi yelaser ephumayo lulungile, kwaye kulula ukufumana i-single longitudinal mode output ezinzileyo.

2. Iilaser zefayibha ezineringi zikhupha iilaser ezinobubanzi obuncinci ngokungenisa izihluzi zebhendi encinci ezifana nee-cavity interference cavities zeFabry-Perot (FP), i-fiber grating okanye ii-sagnac ring cavities kwi-cavity. Nangona kunjalo, ngenxa yobude be-cavity ende, i-longitudinal mode interval incinci, kwaye kulula ukutsiba i-mode phantsi kwempembelelo yendalo, kwaye uzinzo alulunganga.

Isicelo seMveliso:

1. I-Optical sensor I-laser enobubanzi obumxinwa njengomthombo wokukhanya ofanelekileyo kwii-optical fiber sensors, ngokuzidibanisa nee-optical fiber sensors, inokufikelela kumlinganiselo ochanekileyo nowobuzwe obuphezulu. Umzekelo, kwii-pressure okanye kwi-temperature fiber optic sensors, ukuzinza kwe-laser enobubanzi obumxinwa kunceda ukuqinisekisa ukuchaneka kweziphumo zokulinganisa.

2. Umlinganiselo we-spectral onesisombululo esiphezulu Iilaser zobubanzi bomgca omfutshane zinobubanzi bomgca omfutshane kakhulu we-spectral, nto leyo eyenza zibe yimithombo efanelekileyo yee-spectrometers ezinesisombululo esiphezulu. Ngokukhetha ubude bomda kunye nobubanzi bomgca ochanekileyo, iilaser zobubanzi bomgca omfutshane zingasetyenziselwa uhlalutyo oluchanekileyo lwe-spectral kunye nomlinganiselo we-spectral. Umzekelo, kwiisensa zegesi kunye nokubeka esweni okusingqongileyo, iilaser zobubanzi bomgca omfutshane zingasetyenziselwa ukufezekisa umlinganiselo ochanekileyo wokufunxwa kwe-optical, ukukhutshwa kwe-optical kunye nee-spectra ze-molecular emoyeni.

3. Iilaser zefayibha ezisebenzisa i-single-frequency narrow line-width fiber lasers nazo zinezicelo ezibalulekileyo kwiinkqubo ze-liDAR okanye ze-laser ranging. Ukusebenzisa i-single frequency narrow line width fiber laser njengomthombo wokukhanya wokufumanisa, kunye nokufumanisa i-optical coherence, inokwakha umgama omde (amakhulu eekhilomitha) i-liDAR okanye i-rangefinder. Lo mgaqo unomgaqo ofanayo wokusebenza nobuchwepheshe be-OFDR kwi-optical fiber, ngoko ke ayinaso nje isisombululo esiphezulu sendawo, kodwa inokunyusa nomgama wokulinganisa. Kule nkqubo, ububanzi bomgca we-laser spectral okanye ubude bokuhambelana bumisela uluhlu lokulinganisa umgama kunye nokuchaneka kokulinganisa, ngoko ke okukhona ukuhambelana komthombo wokukhanya kubhetele, kokukhona ukusebenza kwenkqubo yonke kuphezulu.