Tsev > Khoom > Laser Crystal > Kev Lag Luam Khoom Thoob Ntiaj Kub Siab LiSAF, LiSGaF Thiab LiCAF Laser Muaj Xauv

LiSAF, LiSGaF, LiCAF Laser Crystal

LiSAF (LiSrAIF6), LiSGaF (LiSrGaF6) thiab LiCAF (LiCaAIF6) yog cov khoom zoo heev uas muaj cov twj siv hluav taws xob thiab kev ua haujlwm siab, thiab kev ua haujlwm zoo tagnrho raws li cov kev ua haujlwm ntawm ultra luv mem tes thiab ultra siab zog. Honour Optics muab Ce, Cr thiab tsis muaj doped LiSAF, LiSGaF thiab LiCAF tus nplawm tsim los ntawm cov txheej txheem Czochralski. Kev siv cov khoom siv ua zoo rau kev siv lead ua thiab kev ntsuas ntawm dopant concentration siv nqus tau spectroscopy pov tseg tias txhua tus siv lead ua yuav ua rau cov neeg siv khoom.

Honour optics yog ib tug kws tshaj lij lub lag luam LiSAF, LiSGaF thiab LiCAF laser muaju txhim khoo, muag tsis muaj doped LiSAF, LiSGaF thiab LiCAF cov nplais, txais tos sab nrauv purity LiSAF, LiSGaF thiab LiCAF laser muaju pom tus nqi.

Laser crystal Dopant Wavelength(nm)
LiSAF Cr.

Ce.

780-1060nm

280-320nm

LiCAF Cr.

Ce.

700-900nm

270-315nm

LiSGaF Cr. 750-950nm

Cerium yog qhov yooj yim tsawg lub ntiaj teb hlau paub. Lub Ce: LiSAF thiab Ce: LiCAF lasers yog categorized li UV diode laser. Wavelengths uas ua los ntawm cov lasers sib txawv li ntawm 280 mus rau 316nm. LiSAF yog siv lead ua los ntawm lithium, strontium, thiab aluminium fluoride. LiCAF muaj li ntawm lithium, calcium, thiab txhuas hniav ua kom haum.

Nyob rau ntawm Ce: LiSAF laser, cerium yog lub teeb emitter, thaum lithium strontium aluminium fluoride yog cov tswv tsev crystalline uas preserves cov yam ntxwv kho qhov muag ntawm cerium. Lub LiSAF Crystal, thaum doped nrog cerium, coj zoo li ib qho siv lead ua qhov muag uas tawm teeb ntawm ntau lub wavelengths, yog li ua qhov laser tunable.

Ce: LiCAF yog lwm qhov UV laser, nrog cerium ua lub teeb emitting qhov chaw, thiab lithium calcium aluminium fluoride ua cov tswv tsev crystalline. Ob Ce: LiSAF thiab Ce: LiCAF pom muaj zog lub cev tsis muaj zog thiab sab nrauv. Ntawm ob lub lasers, Ce: LiCAF muaj qhov ua kom zoo dua thiab cov khoom sib xws.

Cr: LiSAF, raug ib qhov Cr-doped colquiriite crystals, yog ib qho nruab nrab ntawm laser vibronic, dav tunable nyob ze-IR ze ~ 780 nm mus 1060 nm, thiab tseem muaj peev xwm txhawb cov xiam xo nrog cov sijhawm kaum ntawm femtoseconds. Nws tau raug qhia tias nws yog ua tau los ua kom cov pulses luv luv li 24 fs. Piv nrog titanium - sapphire lasers, xws li cov lasers yuav ua tau ntau dua, vim lawv siv ib qho liab es tsis yog lub twj tso kua xim ntsuab thiab yuav tsum tau ua nrog cov twj tso kua qis tsawg, kom lub diode siv tau.

LiSAF, LiSGaF thiab LiCAF laser muaju ntau qhov sib npaug, thiab cov kev sib tshuam lasers yuav tsum yog lub teeb pumped lossis diode pumped. Cr: LiSAF feem ntau nyiam Cr: LiCAF. Vim yog qhov loj tshaj qhov nce ntawm 850 nm thiab tau diode siv nrog diode laser ntawm 670 nm wavelength; Cov ntawv xov xwm no kuj tseem ceeb rau cov txiaj ntsig ntawm cov femtosecond pulses.

Laser Khoom

Laser Properties
Laser type Solid
Pump sources Frequency quadrupled Nd:YAG laser pumped, excimer laser pumped, copper vapor laser pumped
Operating wavelength 280-316nm

Ntawm Cr3 + doped LiCAF, LiSAF thiab LiSGaF, Cr: LiSAF Crystal muaj ntau sab bandwidth zoo ib yam li Ti: sapphire siv lead ua, muab wavelength tunability los ntawm 780 rau 1000 nm thiab enabling cim ntawm ultrashort pulses. Cr: LiSAF laser muaj zoo tshaj piv nrog Ti: sapphire laser, uas yog yuav tsum tau ncaj qha los ntawm lub teeb nrig lossis cov diode laser, thiab cov khoom ntawm lawv lub neej tsis muaj zog thiab cov pa tawm ntawm cov pa tawm kuj siab. Kev cog lus ntawm Cr: LiSAF yuav ua tau tsawg heev, muaj kev siab nqes ua haujlwm thiab ntev lub neej.

Cr: LiSAF tseem muaj lub neej ntev tshaj plaws hauv kev sib piv nrog 'cov Ti: sapphire laser siv lead ua, uas yog lig rau cov lag luam Q-switched. Cr: LiSAF laser siv lead ua yog ib qho nruab nrab ntawm laser nruab nrab thiab pom zoo raws li homogeneously broadened emission medium. Vim li no, tus Cr: LiSAF laser nruab nrab tau pom hais tias nws ua haujlwm tau zoo nyob rau hauv cov CW thiab passively Q-siv lossis hom kev xauv. lag luam wholesale LiSAF, LiSGaF thiab LiCAF laser muaju

Lub cev lub cev thiab tshuaj

Physical and Chemical Properties
Chemical formula Ce:LiSrAlF6 Ce:LiCaAlF6
Crystal structure Trigonal Trigonal
Melting point 766°C 810°C
Thermal conductivity 3 W/m°C 4.58 W/m°C

Lub Cev Lub Cev:

Tshuaj lom neeg mis: Cr3 +: LiSrAlF6
Cov kab kos duab (Å): a = 5.084, c = 10.21
Crystal qauv: trigonal
Chaw Ua Si: P31C
Cr atoms /cm3 rau 1% doping: 8.75 x 10 ^ 19
Tawg Toughness (Mpam): 0.40 (//c)
Melting Point: 766deg. C
Ceev (g /cm³) 3.45
Modulus ntawm Elasticity (GPa): 109
Thermal Expansion Coefficient (10 ^ 6K): - 10 (//c), 25 (⊥c)
Thermal Conductivity (W /m /K) 3.3 (//c), 3.0 (⊥c)
Kev Kub Kub (J /gK) (@ 25deg.C): 0.842

Cov Khoom Muag Kho:

Emission Peak: 846nm
Peak Stimulated Emission Cross Tshooj: 4.8 × 10-20cm2 (//c)
Tshaj Tawm Kis Tau Tus Mob: 67 μs
Scatter Losses (% /cm): < 0.2;
dn /dT (× 10-6 /K): -4.8 (//c), -2.5 (⊥c)

Cov Sellmeier equations (λ hauv μm):

nc ^ 2 = 1.98448 + 0.00235 /(L ^ 2 - 0.010936) - 0.01057 L ^ 2
na ^ 2 = 1.97673 + 0.00309 /(L ^ 2 - 0.00935) - 0.00828 L ^ 2
Cr: LiSAF Crystal:
846nm nc = 1.407 = 1.405
670nm nc = 1.409 na = 1.407
423nm nc = 1.413 na = 1.412
290nm nc = 1.420 mus = 1.420
266nm nc = 1.422 thiab = 1.424

Peb lub tuam txhab LiSAF, LiSGaF thiab LiCAF muaj peev xwm ua tau li cas:

Doping concentration ntawm 0.5 mus 5.5mol%
Ntsig ntawm 2 hli mus rau 50.8 hli, ntev ntawm 1mm mus rau 180mm
Kev Taw Qhia Kev Taw Qhia: 5 arc feeb
Kev Kab Mob Siab: +/- 0.05mm
Siab ntev kam: +/- 0.1mm
Dopant Concentration Tolerance: 0.1%
Parallelism: < 10 arc vib nas this
Perpendicularity: < 5 arc feeb
Chamfer: 0.1 hli @ 45 °
Ntshiab Aperture: 95%
Nto Zoo: 10/5 los sis zoo dua
Qhov Chaw Nto Ntaus: λ /10 @ 633nm
Wavefront Distortion: < λ /10 @ 633nm
Txheej: Raws li tau ua
Loj loj qhov ntev thiab tsis yog standard-dopant concentrations muaj thaum thov.

Tam sim no, Cr: LiSAF cov khoom xws li teeb nyem siv thiab diode siv ua laser tau siv dav.

Thawj daim ntawv thov ntawm lub Ce: LiSAF thiab Ce: LiCAF lasers yog kev saib xyuas thaj tsam tsis ntev.
Qee qhov kev siv ntawm Ce: LiSAF thiab Ce: LiCAF lasers muaj npe hauv qab no:
Ozone Dial ntsuas
LIDAR
Kev tshawb fawb ntawm Optics
Tshawb nrhiav txog kev siv phom nees hauv kev tiv thaiv
Zoo siab txais tos txhua leej txhua tus ua lag luam LiSAF, LiSGaF thiab LiCAF cov nplais ua kom pom tseeb.

Honour optics muaj zoo Ce, Cr, thiab tsis muaj doped LiSAF, LiSGaF thiab LiCAF tus nplawm tsim los ntawm cov txheej txheem czochralski. Honour optics yog ib tug kws tshaj lij lub lag luam LiSAF, LiSGaF thiab LiCAF laser muaju txhim khoo, muag tsis muaj doped LiSAF, LiSGaF thiab LiCAF cov nplais, txais tos sab nrauv purity LiSAF, LiSGaF thiab LiCAF laser muaju pom tus nqi.