Nd:Makristalo a YVO4

Nd:YVO4 ndiye kristalo yogwira bwino kwambiri ya laser host popopera diode pakati pa makristalo amakono a laser, makamaka, pakuchulukira mphamvu kwapakati mpaka pakati.Izi makamaka chifukwa cha kuyamwa kwake komanso mawonekedwe ake otulutsa kuposa Nd:YAG.Popopedwa ndi ma laser diode, kristalo wa Nd:YVO4 waphatikizidwa ndi makristalo apamwamba a NLO (LBO, BBO, kapena KTP) kuti asunthire pafupipafupi zotuluka kuchokera kufupi ndi infrared kupita ku zobiriwira, buluu, kapena ngakhale UV.Kuphatikizikaku kumanga ma lasers onse olimba ndi chida chabwino cha laser chomwe chimatha kuphimba ntchito zofala kwambiri za ma lasers, kuphatikiza makina, kukonza zinthu, mawonekedwe owonera, kuyang'ana kozungulira, zowonetsa kuwala, kuwunika zamankhwala, kusindikiza kwa laser, ndi kusungirako deta, ndi zina zambiri. zawonetsedwa kuti Nd: YVO4 based diode pumped solid state lasers ikukhala mwachangu m'misika yomwe nthawi zambiri imayendetsedwa ndi ma ion lasers oziziritsidwa ndi madzi ndi ma lasers opopa nyali, makamaka pakapangidwe kophatikizika ndi zotulutsa zamtundu umodzi wautali-wotalika zimafunika.
Ubwino wa Nd:YVO4 kuposa Nd:YAG:
• Kufikira kuwirikiza kasanu kumayamwitsa kokulirapo pamakina opopa ambiri mozungulira 808 nm (choncho, kudalira pakupopa kwataliko ndikotsika kwambiri komanso chizolowezi champhamvu chotulutsa njira imodzi);
• Chokulirapo kuwirikiza katatu chomwe chimasonkhezeredwa ndi mpweya wodutsa pamtunda wa 1064nm;
• Njira yochepetsera komanso yotsika kwambiri yotsetsereka;
• Monga kristalo wa uniaxial wokhala ndi birefringence yayikulu, kutulutsa kumangokhala polarized polarized.
Katundu wa Laser wa Nd:YVO4:
• Chikhalidwe chimodzi chokongola kwambiri cha Nd:YVO4 ndi, poyerekeza ndi Nd:YAG, coefficient yake yokulirapo ka 5 mu bandwidth yotakata mozungulira 808nm peak pump wavelength, yomwe ikungofanana ndi muyezo wamagetsi apamwamba a laser diode omwe alipo pano.Izi zikutanthauza kuti kristalo yaying'ono yomwe ingagwiritsidwe ntchito pa laser, yomwe imatsogolera ku makina osakanikirana a laser.Kwa mphamvu yoperekedwa, izi zikutanthauzanso kutsika kwa mphamvu komwe laser diode imagwira ntchito, motero kukulitsa moyo wa laser diode yodula.Mayamwidwe ochulukirapo a Nd:YVO4 omwe angafikire 2.4 mpaka 6.3 nthawi ya Nd:YAG.Kupatula kupopera koyenera, kumatanthauzanso mitundu ingapo ya ma diode.Izi zitha kukhala zothandiza kwa opanga makina a laser pakulolera kwakukulu pakusankha kotsika mtengo.
• Nd: YVO4 crystal ili ndi zigawo zazikulu zolimbikitsa zotulutsa mpweya, zonse pa 1064nm ndi 1342nm.Pamene a-axis idadulidwa Nd: YVO4 crystal yokhazikika pa 1064m, imakhala yokwera nthawi 4 kuposa ya Nd: YAG, pamene pa 1340nm gawo lolimbikitsidwa ndilokulirapo nthawi 18, zomwe zimapangitsa kuti CW igwire ntchito bwino kwambiri Nd: YAG. ku 1320nm.Izi zimapangitsa kuti Nd:YVO4 laser ikhale yosavuta kusunga kutulutsa kwamphamvu kwa mzere umodzi pamafunde awiri.
• Khalidwe lina lofunika la Nd: YVO4 lasers ndi, chifukwa ndi uniaxial osati mkulu symmetry wa kiyubiki monga Nd: YAG, imangotulutsa laser polarized polarized, motero kupewa zosafunika birefringent zotsatira pa pafupipafupi kutembenuka.Ngakhale moyo wa Nd:YVO4 uli wamfupi nthawi 2.7 kuposa wa Nd:YAG, mphamvu yake yotsetsereka imatha kukhala yokwera kwambiri pamapangidwe oyenera a laser cavity, chifukwa cha kuchuluka kwake kwapampu.