Txoj kev tseem ceeb ntawm cov lasers uas muaj kab nqaim uas kho tau

Txoj kev tseem ceeb ntawm kev siv tshuabcov lasers uas muaj kab nqaim uas kho tau

Cov kev tseem ceeb ntawm kev kho kom zoo nkaujcov lasers uas muaj kab nqaimnrog cov qhov sab nraud semiconductor

Cov lasers uas muaj kab nqaim uas kho tau yog lub hauv paus rau kev siv dav hauv cov teb xws li atomic physics, spectroscopy, quantum information, coherent communication, remote sensing, thiab precision measurement. Hauv cov teb no, cov lasers uas yooj yim dua, pheej yig dua, kab nqaim dua thiab ntau qhov kho tau yuav txuas ntxiv tsav cov kev siv tshiab ntawm cov thev naus laus zis no.

Tau 50 xyoo dhau los no, keeb kwm ntawmqhov chaw teeb pom kev zooTLS Laser tau pom tseeb txog kev tsim cov thev naus laus zis laser. Cov lasers xim thawj zaug tau hloov los ntawm cov lasers diode qhov chaw sab nraud (ECDLs), thaum cov tshuab muaj zog siab tau tswj hwm los ntawm cov lasers kho qhov chaw (xws li titanium-sapphire lasers) lossis cov lasers Nd: YAG uas hloov pauv zaus siv cov oscillators optical parametric (OPO). Cov lasers diode uas tsis muaj qhov chaw sab nraud ruaj khov tau sau cov lag luam pheej yig thiab ua haujlwm qis nrog cov DFB Laser thiab DBR diodes lag luam, nrog cov kab dav li nqaim li 500kHz. Tsis ntev los no, cov lasers fiber thiab cov lasers fiber hloov pauv zaus tau pib hloov ntau lub tshuab kho qhov chaw nrog cov qauv tsim sib txawv, muab lub zog siab dua thiab kev kho qhov chaw ntau dua, lossis cov kab dav dua. Niaj hnub no, kev tshwm sim ntawm cov combs zaus ua rau cov lasers ruaj khov zaus kom ua tiav ntawm txhua qhov wavelength thaum tswj kev ruaj khov zoo heev thiab raug. Txawm li cas los xij, txawm tias qhov no, qhov chaw sab nraudlaser semiconductortseem khaws nws txoj cai ua lub teeb pom kev zoo siv ntau hauv ntau lub chaw soj nstuam vim nws yooj yim, ntau yam kev ua haujlwm, kev ua tau zoo thiab tus nqi qis heev.

Tam sim no, cov lasers narrow-linewidth uas muaj cov kab sab nraud semiconductors tau siv dav hauv:

Kev txias thiab ntes laser

Bose-Einstein condensation

Quantum Optics: Lub teeb compressed

Electromagnetic pob tshab thiab qeeb lub teeb

Cov qauv ntawm lub sijhawm thiab zaus

Kev ntsuas laser

Cov lasers uas muaj kab nqaim uas kho tau feem ntau yog tsim los ntawm ib lub maub los, ib lub laser diode thiab ib lub module xaiv zaus. Piv txwv li, cov gratings siv rau kev xaiv zaus laser thiab kev kho, lossis cov lim dej raws li cov qauv ntawm lub qhov muag miv, thiab lwm yam. Cov yam ntxwv tseem ceeb ntawm cov lasers uas muaj kab nqaim uas kho tau nrog cov semiconductors sab nraud muaj xws li kab nqaim laser, qhov hloov pauv zaus tsawg, thiab ntau qhov kev kho dav, thiab lwm yam. Thiab cov yam ntxwv zoo kawg no nyob ntawm lub voj voog tsav laser zoo heev, qhov ruaj khov ntawm lub laser tag nrho, thiab lub hauv paus ntsiab lus ntawm kev xaiv zaus. Txhawm rau kom ua tiav qhov ruaj khov zaus siab dua ntawm lub laser, ntau hom laser zaus-locking modules tuaj yeem ntxiv. Piv txwv li, los ntawm kev siv PDH zaus stabilization technology los xauv qhov wavelength laser ntawm lub qhov optical super-stable cavity, qhov dav ntawm cov laser tuaj yeem raug txo kom txog qib 1 Hz, thiab qhov ruaj khov zaus tuaj yeem ncav cuag <3 × 10-15 @ 1 s.