Sau npe yuav ua rau peb social media rau cov lus qhia sai
Ntawm nws essence, laser nqus yog cov txheej txheem ntawm energizing ib qho nruab nrab kom ua tiav lub xeev uas nws tuaj yeem emit laser teeb. Qhov no feem ntau ua tiav los ntawm kev txhaj tshuaj lossis hluav taws xob tam sim no rau hauv nruab nrab, zoo siab nws cov atoms thiab ua rau lub teeb ci ntsa iab ntawm txoj kev teeb tsa. Cov txheej txheem hauv lub hauv paus no tau hloov kho qhov ntau txij li thaum kev tawm tsam ntawm thawj tus lasers hauv nruab nrab-20th caug xyoo.
Laser nqus yog cov txheej txheem uas muaj zog, feem ntau nyob rau hauv daim ntawv ntawm lub teeb lossis hluav taws xob tam sim ntawd, yog muab rau lub laser kom muaj zog ntxiv rau lub zog siab dua. Qhov hloov hluav taws xob no yog qhov tseem ceeb rau kev ua tiav cov pejxeem inversion, muaj ntau qhov kev hais qhia ntau dua nyob rau hauv nruab nrab lub teeb ci ntsa iab los ntawm lub teeb ci ntsa iab ntawm stimulated emensululated. Cov txheej txheem cuam tshuam nrog cov kev sib cuam tshuam zoo tshaj plaws, feem ntau ua qauv los ntawm kev sib npaug lej lossis ntau dua cov khoom siv tshuab. Qhov tseem ceeb xws li kev xaiv ntawm cov twj tso kua mis (zoo li laser diodes lossis kev ua kom zoo dua ntawm cov yam ntxwv tawm ntawm lub cev (polarization) kom phim qhov kev xav tau ntawm cov kev cai tau txais nruab nrab. Cov Khoom Siv Laser yog qhov tseem ceeb hauv ntau lub laser-xeev, semiconductor, thiab yog qhov tseem ceeb rau lub laser txuag tau zoo thiab ua haujlwm zoo.
1. Khoom siv-lub xeev lasers nrog doped insulators
· Pricepkees:Cov lasers no siv cov tshuaj hauv nruab nrab thiab tso siab rau kev siv kho qhov muag kom energize laser-act. Ib qho piv txwv ib txwm muaj yog neodymium nyob rau hauv YAG lasers.
·Cov kev tshawb fawb tsis ntev los no:Kev kawm los ntawm A. Antipov et al. Tham txog cov khoom siv-lub xeev ze-ir laser rau cov kiv-txauv kho qhov muag. Qhov kev tshawb fawb no tau hais txog kev nce qib hauv lub xeev laser thev naus laus zis, tshwj xeeb yog qhov tseem ceeb rau kev siv xws li kev siv tshuaj thiab kev sib tham.
Ntxiv nyeem ntawv:Ib lub suab nrov-lub xeev ze-ir laser rau kev tig-txauv hloov kho qhov muag
2. Lemiconductor lasers
·Cov Lus Qhia Dav Dav: Feem ntau cov roj hluav taws xob tshuab hluav taws xob, semiconductor lasers kuj tseem muaj txiaj ntsig zoo, xws li cov kev siv kho qhov muag zoo, xws li cov kab ke sab nraud emitting (vecsels).
·Tsis ntev los no tsim: U. Keller txoj haujlwm ua haujlwm ntawm cov khoom siv hloov kho tshiab This advancement is significant for applications in optical frequency metrology.
Ntxiv nyeem ntawv:Optical zaus combs los ntawm ultrafast khov-xeev thiab semiconductor lasers
3. Gas lasers
·Kev siv kho qhov muag hauv cov roj roj: qee yam ntawm cov roj roj, zoo li alkali vapor lasers, siv kev nqus tawm kho tshiab. Cov lasers no feem ntau siv hauv cov ntawv thov uas xav tau cov teeb tsa lub teeb nrog cov khoom tshwj xeeb.
Qhov chaw rau lub qhov muag nres
Tawm Teeb Tawm
Laser Diodes:Siv nyob rau hauv diode-pumped lasers, laser diodes muaj cov txiaj ntsig zoo li muaj effantages, compact loj, thiab muaj peev xwm ua kom zoo.
Ntxiv nyeem ntawv:Dab tsi yog laser diode?
Nyem teeb: Flash lamps are intense, broad-spectrum light sources that are commonly used for pumping solid-state lasers, such as ruby or Nd:YAG lasers. Lawv muab cov kev siv hnyav tawg ntawm lub teeb uas txaus siab ntawm lub laser laser.
Arc teeb
LEDs (Teeb qhib Diodes)
: Hauv qee qhov kev sim teeb tsa, tsom lub hnub ci tau siv los ua cov twj tso kua mis rau hnub ci-nqus dej. Cov txheej txheem no siv lub zog hnub ci, ua rau nws muaj txiaj ntsig txuas ntxiv thiab ua tau zoo dua thiab tsis tshua muaj zog piv rau cov khoom siv dag.
Fiber ntau-Coaser laser diodes
: Sometimes, one laser is used to pump another. For example, a frequency-doubled Nd: YAG laser might be used to pump a dye laser. Cov qauv no feem ntau siv thaum wavelengthsoob yog qhov yuav tsum tau rau lub txheej txheem nqus dej uas tsis yooj yim ua tiav nrog cov teeb pom kev zoo.
: Cov txheej txheem pib nrog tus diode laser, uas ua haujlwm raws li lub qhov cub. Diode lasers raug xaiv rau lawv txoj kev ua tau zoo, ua rau qhov loj me, thiab muaj peev xwm los teeb hluav taws xob ntawm cov wavelengths.
TWJ Lub Teeb:
Khoom siv:Qhov tau txais nruab nrab hauv DPSs lasers feem ntau yog cov khoom siv-lub sijhawm zoo li ND: YAG (yB
Doping:
Xav tau emissulated:Thaum cov pej xeem inversion tau tiav, kev qhia ntawm lub zog ntawm ions kom rov qab mus rau hauv lub xeev hauv av, emitting lub photon hauv cov txheej txheem.
| Qhov toob kas | Tseem ceeb | Qhov cuam tshuam / Tshuav | |
|---|---|---|---|
| Spectrum Haum | Tsov yuav tsum phim cov spectrum nqus ntawm lub laser nruab nrab | - | |
| Yuav tsum muaj siab txaus rau qib kev hlub | Overly haj sib zog tuaj yeem ua rau thermal kev puas tsuaj; Tsawg heev yuav tsis ua tiav cov pej xeem inversion | - | |
| Beam Zoo | Tshwj xeeb tseem ceeb nyob rau hauv kawg-tso lasers | Ua kom pom kev sib txuas ua ke thiab pab txhawb kom emitted laser nqaj zoo | High Beam Zoo yog qhov tseem ceeb rau kev ua kom haum ntawm cov twj tso kua mis lub teeb thiab Laser hom ntim ntim |
| Kev loj leeb | Yuav tsum muaj xov xwm nrog anisotropic cov zog | Txhim Kho Kev Ua Tau Zoo thiab tuaj yeem cuam tshuam Emitted laser lub teeb polarization | Lub xeev polarization tshwj xeeb yuav tsim nyog |
| Kev siv suab nrov | Cov suab nrov tsawg yog qhov tseem ceeb | Kev hloov pauv nyob rau hauv kev siv lub teeb taub hau tuaj yeem cuam tshuam laser tso tawm zoo thiab ruaj khov |
Lub Sijhawm Post: Dec-01-2023