Txoj kev tseem ceeb ntawm tunable nqaim-linewidth lasers

Lub ntsiab technical txoj kev ntawmtunable nqaim-linewidth lasers

Lub ntsiab technical routes ntawm tunablenqaim-linewidth lasersnrog semiconductor txheej kab noj hniav

Tunable nqaim-linewidth lasers yog lub hauv paus rau kev siv dav hauv thaj chaw xws li atomic physics, spectroscopy, quantum information, coherent communication, remote sensing, and precision measurement. Nyob rau hauv cov teb no, yooj yim dua, pheej yig dua, nqaim linewidth thiab wider tuning range lasers yuav txuas ntxiv tsav cov kev siv tshiab ntawm no technology.

Tshaj li 50 xyoo dhau los, keeb kwm ntawm lubtunable lub teeb qhov chawTLS Laser tau pom ntau qhov kev txhim kho ntawm laser tshuab. Cov xim zas xim thawj zaug tau hloov los ntawm cov kab noj hniav sab nraud diode lasers (ECDLs), thaum lub tshuab hluav taws xob muaj zog yog tswj los ntawm cov khoom siv hluav taws xob tunable (xws li titanium-sapphire lasers) lossis zaus hloov Nd: YAG lasers siv optical parametric oscillators (OPO). Diode lasers tsis ruaj khov txheej kab noj hniav tau sau cov nqi qis thiab kev ua lag luam qis kawg nrog kev lag luam DFB Laser thiab DBR diodes, nrog cov kab dav dav li nqaim li 500kHz. Tsis ntev los no, fiber ntau lasers thiab sib txawv-frequency fiber lasers tau pib hloov ntau lub xeev cov txheej txheem nrog cov qauv sib txawv, muab lub zog ntau dua thiab ntau dua tunability, lossis cov kab dav dav. Niaj hnub no, qhov tshwm sim ntawm zaus combs enables zaus-stabilized lasers ua tiav ntawm txhua lub wavelength thaum tswj kev ruaj ntseg zoo thiab raug. Txawm li cas los xij, txawm qhov no, cov kab noj hniav sab nraudsemiconductor lasertseem tuav nws cov xwm txheej raws li ib qho kev siv teeb pom kev zoo hauv ntau lub chaw soj nstuam vim nws txoj kev yooj yim, kev ua haujlwm ntau, kev ua tau zoo thiab tus nqi qis heev.

Tam sim no, tunable nqaim-linewidth lasers nrog sab nraud kab noj hniav semiconductors tau dav siv hauv:

Laser txias thiab ntes

Bose-Einstein condensation

Quantum Optics: Compressed lub teeb

Electromagnetic pob tshab thiab qeeb lub teeb

Cov qauv siv sijhawm thiab zaus

Laser spectroscopy

Tunable nqaim-linewidth lasers feem ntau yog tsim los ntawm cov maub los, lub laser diode thiab ntau zaus xaiv module. Piv txwv li, gratings siv rau laser zaus xaiv thiab tuning, los yog cov ntxaij lim dej raws li tus miv lub qhov muag qauv, thiab lwm yam. Cov yam ntxwv tseem ceeb ntawm tunable nqaim-linewidth lasers nrog sab nraud kab noj hniav semiconductors muaj xws li nqaim laser linewidth, tsis tshua muaj zaus drift, thiab dav tuning ntau yam, thiab cov yam ntxwv zoo heev nyob ntawm ib qho zoo heev laser tsav Circuit Court, lub zuag qhia tag nrho stability thiab stability Txhawm rau ua kom muaj kev ruaj ntseg ntau dua ntawm lub laser, ntau hom laser zaus-locking modules tuaj yeem ntxiv. Piv txwv li, los ntawm kev siv PDH zaus stabilization tshuab los xauv lub laser wavelength ntawm qhov kho qhov muag super-stable kab noj hniav, linewidth ntawm lub laser tuaj yeem nqaim mus rau qib 1 Hz, thiab qhov kev ruaj ntseg tuaj yeem ncav cuag <3 × 10-15 @ 1 s.