Kev txo qis ntawm qhov dav ntawm laser

Kev txo qis ntawmqhov dav ntawm txoj kab laser

Qhov dav ntawm cov kab laser muaj feem cuam tshuam ncaj qha rau hom laser. Qhov dav ntawm cov kab laser tuaj yeem txo qis los ntawm kev ua kom zoo dua qhov tsim laser thiab txo qhov cuam tshuam ntawm cov suab nrov sab nraud ntau li ntau tau. Kauj ruam thawj zaug yog txiav txim siab seb qhov twg yog qhov tseem ceeb, suab nrov quantum lossis suab nrov classical, vim qhov no yuav cuam tshuam rau kev ntsuas tom ntej.

Thaum lub zog intracavity siab, qhov poob ntawm resonator qis thiab lub sijhawm rov qab mus rau resonator ntev, lub suab nrov quantum ntawmlaser(feem ntau yog suab nrov uas tshwm sim los ntawm lub sijhawm) muaj qhov cuam tshuam me me heev. Suab nrov ib txwm muaj tej zaum yuav tshwm sim los ntawm kev siv tshuab. Qhov kev hloov pauv tuaj yeem txo tau los ntawm kev siv lub tshuab laser resonator luv luv, tab sis qee zaum hauv cov tshuab resonator luv dua, qhov kev hloov pauv ntev tuaj yeem ua rau muaj kev cuam tshuam zoo dua. Kev tsim kho tshuab tsim nyog tuaj yeem txo qhov kev sib txuas ntawm lub tshuab laser resonator thiab lub zog sab nraud, thiab tseem txo qhov cuam tshuam thermal drift. Kuj tseem muaj kev hloov pauv thermal hauv qhov nruab nrab nce, uas yog tshwm sim los ntawm kev hloov pauv hauv lub zog twj tso kua mis.

Rau kev ua suab nrov zoo dua, lwm yam khoom siv ruaj khov yuav tsum tau txais yuav, tab sis nws yog qhov zoo tshaj plaws los siv cov txheej txheem passive ua ntej. Qhov dav ntawm cov laser ib leeg-zaus thiablaser fiberyog ob peb kilohertz, thiab qee zaum txawm tias tsawg dua 1KHz. Los ntawm kev siv txoj kev ruaj khov nquag, qhov dav ntawm kab tsawg dua 1KHz tuaj yeem tau txais. Qhov dav ntawm cov laser diodes feem ntau yog nyob rau hauv MHZ ntau yam thiab kuj tuaj yeem txo qis rau KHz, xws li hauv cov lasers diode sab nraud, tshwj xeeb tshaj yog rau cov diodes tawm tswv yim kho qhov muag nrog lub qhov siab-precision reference.

Nws yog ib qho tsim nyog sau tseg tias qee zaum, ib qholub teeb lasertsis tas yuav tsim kom muaj lub teeb nqaim heev:

1. Thaum qhov ntev ntawm qhov sib xws ntev, qhov cuam tshuam ntawm qhov sib xws (vim yog qhov tsis muaj zog ntawm kev cuam tshuam parasitic) yuav cuam tshuam rau cov duab ntawm lub teeb. Hauv cov duab tso tawm laser, qhov cuam tshuam ntawm cov speckle tuaj yeem cuam tshuam rau qhov zoo ntawm qhov chaw rov qab.

2. Thaum lub teeb raug xa mus rau hauv cov fibers optical uas nquag lossis tsis nquag, qhov dav ntawm cov kab nqaim ua rau muaj teeb meem vim yog Brillouin scattering uas raug txhawb nqa. Thaum lub sijhawm no, qhov dav ntawm cov kab yuav tsum tau nce ntxiv, piv txwv li, los ntawm kev hloov kho lub laser diode nrog tam sim no lossis siv lub modulator optical kom nrawm nrawm zaus tam sim ntawd. Qhov dav ntawm cov kab siv rau hauv lwm qhov xwm txheej. Qhov dav ntawm cov kab kuj tseem siv los piav qhia qhov dav ntawm kev puas tsuaj ntawm cov teeb pom kev zoo.