Njira yayikulu yaukadaulo yosinthira ma lasers opapatiza okhala ndi mzere wopapatiza

Njira yayikulu yaukadaulo yama laser opingasa osinthika

Njira zazikulu zaukadaulo zosinthirama laser opingasa mzerendi mabowo akunja a semiconductor

Ma laser opingasa okhala ndi mzere wopingasa ndiwo maziko a ntchito zambiri m'magawo monga atomic physics, spectroscopy, chidziwitso cha quantum, kulumikizana kogwirizana, kuzindikira kutali, ndi kuyeza molondola. M'magawo awa, ma laser osavuta, otsika mtengo, opapatiza komanso otakata apitiliza kuyendetsa ntchito zatsopano zaukadaulo uwu.

Kwa zaka 50 zapitazi, mbiri yagwero lowunikira losinthikaTLS Laser yakhala ikuonetsa kwambiri chitukuko cha ukadaulo wa laser. Ma laser oyamba opaka utoto asinthidwa ndi ma laser akunja a diode (ECDLs), pomwe makina amphamvu kwambiri amalamulidwa ndi ma laser olimba osinthika (monga ma laser a titanium-sapphire) kapena ma laser a Nd:YAG osinthidwa pafupipafupi pogwiritsa ntchito oscillators owoneka bwino (OPO). Ma laser a diode opanda ma cavity akunja okhazikika adzaza msika wotsika mtengo komanso wotsika ndi ma diode amalonda a DFB Laser ndi DBR, okhala ndi m'lifupi mwake ngati 500kHz. Posachedwapa, ma laser a fiber ndi ma laser a fiber osinthika ayamba kusintha machitidwe ambiri olimba ndi mapangidwe osiyanasiyana, kupereka mphamvu yayikulu komanso kuthekera kwakukulu, kapena m'lifupi mwake pang'ono. Masiku ano, kutuluka kwa ma frequency comb kumapangitsa kuti ma laser okhazikika pafupipafupi akwaniritsidwe pamlingo uliwonse uku akusunga kukhazikika komanso kulondola kwabwino. Komabe, ngakhale izi, cavity yakunjalaser ya semiconductorikadali ndi udindo wake ngati gwero lowunikira lomwe limagwiritsidwa ntchito kwambiri m'ma laboratories ambiri chifukwa cha kuphweka kwake, magwiridwe antchito ambiri, magwiridwe antchito abwino komanso mtengo wotsika kwambiri.

Pakadali pano, ma laser osinthika okhala ndi mzere wopapatiza wokhala ndi ma semiconductor akunja akhala akugwiritsidwa ntchito kwambiri mu:

Kuziziritsa ndi kujambula pogwiritsa ntchito laser

Kuchuluka kwa madzi mu Bose-Einstein

Quantum Optics: Kuwala kopanikizika

Kuwala kwamagetsi kowonekera komanso pang'onopang'ono

Miyezo ya nthawi ndi kuchuluka kwa nthawi

Laser spectroscopy

Ma laser opingasa okhala ndi mzere wopingasa nthawi zambiri amakhala ndi chowongolera, laser diode ndi gawo losankha ma frequency. Mwachitsanzo, ma grating omwe amagwiritsidwa ntchito posankha ndi kusintha ma frequency a laser, kapena zosefera kutengera kapangidwe ka maso a mphaka, ndi zina zotero. Makhalidwe ofunikira a ma laser opingasa okhala ndi ma semiconductor akunja amaphatikizapo mzere wopingasa wa laser, kusuntha kwa ma frequency ochepa, ndi mtundu wopingasa, ndi zina zotero. Ndipo makhalidwe abwinowa amadalira dera labwino kwambiri loyendetsera laser, kukhazikika kwa makina a laser, ndi mfundo yosankha ma frequency. Kuti mupeze kukhazikika kwa ma frequency apamwamba a laser, mitundu yosiyanasiyana ya ma module otseka ma frequency a laser ikhoza kuwonjezeredwa. Mwachitsanzo, pogwiritsa ntchito ukadaulo wa PDH frequency stabilization kuti mutseke mafunde a laser pa cavity yowoneka bwino kwambiri, mzere wopingasa wa laser ukhoza kuchepetsedwa kufika pamlingo wa 1 Hz, ndipo kukhazikika kwa ma frequency kumatha kufika < 3 × 10-15 @ 1 s.