Puisano ea quantum: lasers e moqotetsane ea bophara ba mela

Puisano ea Quantum:li-lasers tsa bophara ba mola o moqotetsane

Laser ea bophara ba mola o moqotetsaneke mofuta oa laser o nang le thepa e khethehileng ea optical, e khetholloang ka bokhoni ba ho hlahisa lebone la laser le nang le mohala o monyenyane haholo oa optical (ke hore, spectrum e moqotetsane). Bophahamo ba mola oa laser e moqotetsane bo bolela bophara ba sekhahla sa eona, hangata se hlahisoang ho bandwidth ka har'a frequency ea unit, mme bophara bona bo boetse bo tsejoa e le "spectral line wide" kapa "bophara ba mola". Li-laser tse tšesaane li na le bophara ba mela e moqotetsane, hangata lipakeng tsa makholo a 'maloa a kilohertz (kHz) le megahertz tse seng kae (MHz), e nyane haholo ho feta bophara ba mela ea spectral ea lilase tsa tloaelo.

Ho arola ka sebopeho sa cavity:

1. Linear cavity fiber lasers li arotsoe ka mofuta oa Bragg reflection e ajoang (DBR Laser) le mofuta oa maikutlo a ajoang (DFB Laser) meaho e 'meli. Laser e hlahisoang ke li-lasers ka bobeli ke leseli le lumellanang haholo le bophara bo moqotetsane le lerata le tlase. DFB faeba laser ka finyella ka bobeli laser maikutlo lelaserkhetho ea mokhoa, kahoo botsitso ba maqhubu a laser bo botle, 'me ho bonolo ho fumana tlhahiso e tsitsitseng ea nako e telele ea longitudinal.

2. Ring-cavity fiber lasers e hlahisa li-lasers tse bophara bo fokolang ka ho hlahisa li-filters tse nang le lihlopha tse moqotetsane tse kang Fabry-Perot (FP) li- interference cavities, fiber grating kapa sagnac ring cavities ka har'a cavity. Leha ho le joalo, ka lebaka la bolelele ba sebaka se selelele, nako ea nako ea longitudinal e nyenyane, 'me ho bonolo ho qhomela tlas'a tšusumetso ea tikoloho,' me botsitso bo bobe.

Tšebeliso ea Sehlahisoa:

1. Optical sensor laser-width laser e le mohloli o motle oa leseli bakeng sa lisebelisoa tsa optical fiber, ka ho kopanya le lisebelisoa tsa optical fiber, li ka finyella tekanyo e phahameng, e phahameng ea kutloisiso. Ka mohlala, khatellong kapa mocheso oa li-fiber optic sensors, botsitso ba laser e moqotetsane ea bophara bo thusa ho netefatsa ho nepahala ha liphetho tsa tekanyo.

2. Tekanyo ea spectral e phahameng-resolution Li-laser tsa Molapo o mosesaane li na le bophara ba mela e tšesaane haholo, e leng se etsang hore e be mehloli e loketseng bakeng sa li-spectrometer tse nang le qeto e phahameng. Ka ho khetha bolelele bo nepahetseng ba wavelength le linewidth, li-lasers tse tšesaane tsa linewidth li ka sebelisoa bakeng sa tlhahlobo e nepahetseng ea spectral le tekanyo ea spectral. Mohlala, ho lisensara tsa khase le ho lekola tikoloho, ho ka sebelisoa li-lasers tse patisaneng tsa linewidth ho fihlela litekanyo tse nepahetseng tsa ho monya ha mahlo, ho ntšoa ha optical emission le molecular spectra sepakapakeng.

3. Li-lasers tsa fiber tse nang le maqhubu a moqotetsane a le mong oa Lidar le tsona li na le lits'ebetso tsa bohlokoa haholo ho liDAR kapa litsamaiso tsa laser range. Ka ho sebelisa laser e le 'ngoe e moqotetsane ea bophara ba fiber laser e le mohloli oa leseli oa ho lemoha, ho kopantsoe le ho lemoha ho lumellana ha mahlo, e ka haha ​​​​liDAR tsa sebaka se selelele (lik'hilomithara tse makholo) kapa rangefinder. Molao-motheo ona o na le molao-motheo oa ts'ebetso o ts'oanang le theknoloji ea OFDR ho fiber optical, kahoo ha e na qeto e phahameng haholo ea sebaka, empa hape e ka eketsa sebaka sa tekanyo. Tsamaisong ena, bophara ba mola oa laser spectral kapa bolelele ba momahano bo lekanya sebaka sa tekanyo ea sebaka le ho nepahala ha litekanyo, kahoo ha momahano o betere oa mohloli oa leseli, ts'ebetso ea tsamaiso eohle e phahame.