Kulankhulana kwa Quantum: ma lasers opapatiza okhala ndi mzere wopapatiza

Kulankhulana kwa Quantum:ma laser opapatiza okhala ndi mzere wopapatiza

Laser yopapatiza yokhala ndi mzere wopapatizandi mtundu wa laser yokhala ndi mawonekedwe apadera a kuwala, omwe amadziwika ndi kuthekera kopanga kuwala kwa laser yokhala ndi mzere wocheperako wowala (ndiko kuti, sipekitiramu yopapatiza). M'lifupi mwa mzere wa laser yopapatiza yowala imatanthauza m'lifupi mwa sipekitiramu yake, yomwe nthawi zambiri imawonetsedwa mu bandwidth mkati mwa ma frequency a unit, ndipo m'lifupi uwu umadziwikanso kuti "m'lifupi mwa mzere wa spectral" kapena kungoti "m'lifupi mwa mzere". Ma laser opapatiza okhala ndi mzere wopapatiza ali ndi m'lifupi mwa mzere wopapatiza, nthawi zambiri pakati pa mazana angapo a kilohertz (kHz) ndi megahertz (MHz) ochepa, omwe ndi ochepa kwambiri kuposa m'lifupi mwa mzere wa spectral wa ma laser wamba.

Kugawa malinga ndi kapangidwe ka m'mimba:

1. Ma laser a mzere wozungulira amagawidwa m'magulu awiri: mtundu wogawa wa Bragg reflection (DBR Laser) ndi mtundu wogawa wa feedback (Laser ya DFB) kapangidwe kawiri. Laser yotulutsa ya ma laser onsewa ndi yowala kwambiri yokhala ndi mzere wopapatiza komanso phokoso lochepa. Laser ya DFB fiber imatha kukwaniritsa mayankho a laser komansolaserkusankha mode, kotero kukhazikika kwa ma frequency a laser output kuli bwino, ndipo ndikosavuta kupeza single longitudinal mode output yokhazikika.

2. Ma laser a ulusi wa mphete amatulutsa ma laser opingasa m'lifupi mwa kuyika zosefera za narrow-band monga Fabry-Perot (FP) interference cavities, fiber grating kapena sagnac ring cavities mu cavity. Komabe, chifukwa cha kutalika kwa cavity yayitali, longitudinal mode interval ndi yaying'ono, ndipo n'zosavuta kudumpha mode pansi pa mphamvu ya chilengedwe, ndipo kukhazikika kwake ndi kochepa.

Kugwiritsa Ntchito Mankhwala:

1. Sensa Yowunikira: Laser yopapatiza ngati gwero labwino kwambiri la magetsi a optical fiber, poiphatikiza ndi masensa a optical fiber, imatha kuyeza molondola kwambiri komanso mozama kwambiri. Mwachitsanzo, mu masensa a optical fiber optic omwe ali ndi kuthamanga kapena kutentha, kukhazikika kwa laser yopapatiza kumathandiza kutsimikizira kulondola kwa zotsatira za muyeso.

2. Kuyeza kwa ma spectral okhala ndi resolution yapamwamba Ma laser opapatiza okhala ndi mzere wopapatiza amakhala ndi mzere wopapatiza kwambiri, zomwe zimapangitsa kuti akhale magwero abwino kwambiri a ma spectrometer okhala ndi resolution yapamwamba. Posankha kutalika kwa mafunde ndi mzere wolondola, ma laser opapatiza okhala ndi mzere wopapatiza angagwiritsidwe ntchito poyesa molondola ma spectral ndi kuyeza ma spectral. Mwachitsanzo, mu masensa a gasi ndi kuyang'anira chilengedwe, ma laser opapatiza okhala ndi mzere wopapatiza angagwiritsidwe ntchito kuti apeze miyeso yolondola ya kuyamwa kwa kuwala, kutulutsa kwa kuwala ndi ma spectra a molecular mumlengalenga.

3. Ma laser a Lidar single-frequency narrow line-width fiber alinso ndi ntchito zofunika kwambiri mu liDAR kapena laser ranging systems. Pogwiritsa ntchito single frequency narrow line width fiber laser ngati gwero la kuwala, kuphatikiza ndi optical coherence detection, imatha kupanga mtunda wautali (makilomita mazana ambiri) liDAR kapena rangefinder. Mfundo imeneyi ili ndi mfundo yofanana ndi ukadaulo wa OFDR mu optical fiber, kotero sikuti imangokhala ndi malo okwanira, komanso imatha kuwonjezera mtunda woyezera. Mu dongosololi, m'lifupi mwa mzere wa laser spectral kapena kutalika kwa mgwirizano kumatsimikiza mtunda woyezera ndi kulondola kwa muyeso, kotero kulumikizana kwa gwero la kuwala kumakhala bwino, ndipo dongosolo lonse limagwira ntchito bwino.