Ukuxhumana kwe-Quantum: ama-laser obubanzi bomugqa omncane

Ukuxhumana kwe-Quantum:ama-laser obubanzi bomugqa omncane

I-laser enobubanzi bomugqa omncaneuhlobo lwe-laser olunezakhiwo ezikhethekile ze-optical, olubonakala ngekhono lokukhiqiza umsebe we-laser onobubanzi obuncane kakhulu be-optical linewidth (okungukuthi, i-spectrum encane). Ububanzi bomugqa we-laser obuncane bobubanzi bomugqa bubhekisela ebubanzini be-spectrum yayo, evame ukuvezwa ku-bandwidth ngaphakathi kwemvamisa yeyunithi, futhi lobu bubanzi baziwa nangokuthi "ububanzi bomugqa we-spectral" noma "ububanzi bomugqa". Ama-laser obuncane bomugqa anobubanzi bomugqa obuncane, ngokuvamile phakathi kwamakhulu ambalwa ama-kilohertz (kHz) nama-megahertz ambalwa (MHz), amancane kakhulu kunobubanzi bomugqa we-spectral wama-laser avamile.

Ukuhlukaniswa ngesakhiwo somgodi:

1. Ama-laser e-fiber cavity ahlukaniswe ngohlobo lwe-Bragg reflection olusatshalalisiwe (i-DBR Laser) kanye nohlobo lwempendulo olusatshalalisiwe (I-DFB Laser) izakhiwo ezimbili. I-laser ephumayo yama-laser womabili ilula kakhulu futhi inobubanzi obuncane kanye nomsindo ophansi. I-laser ye-DFB fiber ingafinyelela kokubili impendulo ye-laser kanyei-laserukukhetha imodi, ngakho-ke ukuzinza kwemvamisa ye-laser yokukhipha kuhle, futhi kulula ukuthola okukhiphayo kwemodi eyodwa ende eqinile.

2. Ama-laser e-fiber ane-ring-cavity akhipha ama-laser anobubanzi obuncane ngokungenisa izihlungi ze-narrow-band ezifana ne-Fabry-Perot (FP) interference cavities, i-fiber grating noma i-sagnac ring cavity. Kodwa-ke, ngenxa yobude be-cavity ende, i-longitudinal mode interval incane, futhi kulula ukugxuma imodi ngaphansi kwethonya lemvelo, futhi ukuzinza kubi.

Isicelo Somkhiqizo:

1. Inzwa yokubona I-laser enobubanzi obuncane njengomthombo wokukhanya ofanele wezinzwa ze-fiber optical, ngokuhlanganiswa nezinzwa ze-fiber optical, ingafinyelela ukulinganisa okunembile nokuzwela okuphezulu. Isibonelo, kuzinzwa ze-fiber optic zokucindezela noma zokushisa, ukuzinza kwe-laser enobubanzi obuncane kusiza ukuqinisekisa ukunemba kwemiphumela yokulinganisa.

2. Ukulinganisa kwe-spectral enesinqumo esiphezulu Ama-laser obubanzi bomugqa omfushane anobubanzi bomugqa omfushane kakhulu, okwenza abe imithombo efanelekile yama-spectrometer anesinqumo esiphezulu. Ngokukhetha ubude nobubanzi bomugqa obufanele, ama-laser obubanzi bomugqa omfushane angasetshenziswa ekuhlaziyweni kwe-spectral okunembile kanye nokulinganiswa kwe-spectral. Isibonelo, kuzinzwa zegesi kanye nokuqapha kwemvelo, ama-laser obubanzi bomugqa omfushane angasetshenziswa ukufeza izilinganiso ezinembile zokumuncwa kwe-optical, ukukhishwa kwe-optical kanye nama-spectra e-molecular emoyeni.

3. Ama-laser e-fiber e-Lidar anobubanzi obuncane obuyi-single-frequency narrow line-width nawo anezinhlelo zokusebenza ezibaluleke kakhulu ezinhlelweni ze-liDAR noma ze-laser ranging. Ukusebenzisa i-fiber laser enobubanzi obuncane obuyi-single frequency njengomthombo wokukhanya wokuthola, kuhlanganiswe nokutholwa kokuhambisana kokubona, kungakha ibanga elide (amakhulu amakhilomitha) i-liDAR noma i-rangefinder. Lesi simiso sinesimiso sokusebenza esifanayo nobuchwepheshe be-OFDR ku-fiber optical, ngakho-ke asigcini nje ngokuba nesisombululo esiphezulu sendawo, kodwa futhi singandisa ibanga lokulinganisa. Kulesi simiso, ububanzi bomugqa we-laser spectral noma ubude bokuhambisana bunquma ububanzi bokulinganisa ibanga kanye nokunemba kokulinganisa, ngakho-ke uma ukuhambisana komthombo wokukhanya kungcono, kulapho ukusebenza kohlelo lonke kukhuphuka khona.