Samarium-doped iav phaj limfeem ntau siv hauv cov kab noj hniav laser rau ntau yam kev siv.Cov ntxaij lim dej no yog tsim los xa cov wavelengths tshwj xeeb ntawm lub teeb thaum thaiv lwm tus, tso cai rau kev tswj xyuas meej ntawm cov zis laser.Samarium feem ntau raug xaiv los ua cov khoom siv dopant vim nws cov khoom zoo spectroscopic.
Ntawm no yog ib qho kev piav qhia ntawm yuav ua li cas samarium-doped iav phaj lim ua haujlwm hauv cov kab noj hniav laser:
Laser Cavity Teeb: Lub laser kab noj hniav feem ntau muaj ob daim iav tso rau ntawm qhov sib txawv, ua ib qho kev kho qhov muag.Ib daim iav yog ib feem kis tau tus mob (tso zis coupler), tso cai rau ib feem ntawm lub teeb laser tawm, thaum lwm daim iav yog heev reflective.Lub samarium-doped iav phaj lim yog muab tso rau hauv lub laser kab noj hniav, nyob nruab nrab ntawm cov iav los yog raws li ib qho khoom siv sab nraud.
Cov Khoom Siv Dopant: Samarium ions (Sm3+) tau muab tso rau hauv cov iav matrix thaum lub sijhawm tsim khoom.Cov samarium ions muaj qib zog uas sib haum rau cov kev hloov hluav taws xob tshwj xeeb, uas txiav txim siab lub teeb ntawm lub teeb uas lawv tuaj yeem cuam tshuam nrog.
Absorption thiab Emission: Thaum lub laser emits lub teeb, nws dhau los ntawm samarium-doped iav phaj lim.Lub lim yog tsim los nqus lub teeb ntawm qee qhov wavelengths thaum xa lub teeb ntawm lwm qhov xav tau wavelengths.Cov samarium ions nqus cov photons ntawm lub zog tshwj xeeb, txhawb cov electrons mus rau qib siab zog.Cov electrons zoo siab no ces lwj rov qab mus rau qis zog, emitting photons ntawm tej wavelengths.
Filtering Effect: Los ntawm kev ua tib zoo xaiv qhov dopant concentration thiab iav muaj pes tsawg leeg, samarium-doped iav phaj lim tuaj yeem raug kho kom haum rau nqus cov wavelengths tshwj xeeb ntawm lub teeb.Qhov kev nqus tau zoo lim tawm cov kab laser tsis xav tau lossis emissions spontaneous los ntawm laser nruab nrab, kom ntseeg tau tias tsuas yog qhov xav tau laser wavelength kis tau los ntawm lub lim.
Laser Output Control: Lub samarium-doped iav phaj lim pab tswj lub laser tso zis los ntawm kev xaiv xa tawm qee qhov wavelengths thiab suppressing lwm tus.Qhov no ua rau cov tiam ntawm ib qho nqaim lossis tunable laser tso zis, nyob ntawm seb cov qauv lim tshwj xeeb.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias kev tsim thiab kev tsim ntawm samarium-doped iav phaj lim tuaj yeem sib txawv nyob ntawm cov txheej txheem laser.Lub lim cov yam ntxwv spectral, nrog rau cov kis tau tus mob thiab nqus bands, tuaj yeem hloov kho kom haum rau lub laser qhov xav tau cov yam ntxwv.Cov neeg tsim khoom tshwj xeeb hauv laser optics thiab cov khoom siv tuaj yeem muab cov ntsiab lus ntxiv thiab cov lus qhia tshwj xeeb raws li cov kab noj hniav tshwj xeeb thiab cov ntawv thov.
Post lub sij hawm: Jul-09-2020