CY2256 Ytterbium-doped Potassium-Gadolinium Tungstate Crystal (Yb:KGW)

Catalog No.	CY2256
Crystal Structure	Tetragonal
Perpendicularity	<5"
Protective Chamfer	<0.1 mm at 45˚
Lattice Constants	a=5.16Å; c=10.85Å

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CY2256 Ytterbium-doped Potassium-Gadolinium Tungstate Crystal (Yb:KGW)

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Specification

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Material specifications
Chemical formula	potassium gadolinium tungstate
Crystal structure	monoclinic double tungstates
Density	7.27 g/cm3
Transmission range	0.35-5.5 μm
Mohs hardness	4 to 5
Refractive indices at 1060 nm	ng = 2.037, np = 1.986, nm=2.033
Optical and thermal properties
Thermal conductivity	Ka=2.6 W/mK, Kb=3.8 W/mK, Kc=3.4 W/mK
Thermal optical coefficient @1064 nm	dnp/dT=-15.7 * 10-6 K-1
	dnm/dT=-11.8 * 10-6 K-1
	dng/dT=-17.3 * 10-6 K-1
Thermal expansion	αa=4X10-6 /°C
	αb=3.6X10-6 /°C
	αc=8.5X10-6 /°C
Melting temperature	1075 °C
Absorption cross-section	1.2X10-19 cm2
Stimulated emission cross-section (E\| \|a)	2.6X10-20 cm2
Laser wavelength	1023-1060 nm
Lasing threshold	35 mW
Stark levels energy (in cm-1) of the 2F5/2 manifolds of Yb3+ @ 77 K	10682, 10471, 10188
Stark levels energy (in cm-1) of the 2F7/2 manifolds of Yb3+ @ 77K	535, 385, 163, 0
optical damage threshold, GW/cm2	20

Material specifications
Chemical formula	potassium gadolinium tungstate
Crystal structure	monoclinic double tungstates
Density	7.27 g/cm3
Transmission range	0.35-5.5 μm
Mohs hardness	4 to 5
Refractive indices at 1060 nm	ng = 2.037, np = 1.986, nm=2.033
Optical and thermal properties
Thermal conductivity	Ka=2.6 W/mK, Kb=3.8 W/mK, Kc=3.4 W/mK
Thermal optical coefficient @1064 nm	dnp/dT=-15.7 * 10-6 K-1
	dnm/dT=-11.8 * 10-6 K-1
	dng/dT=-17.3 * 10-6 K-1
Thermal expansion	αa=4X10-6 /°C
	αb=3.6X10-6 /°C
	αc=8.5X10-6 /°C
Melting temperature	1075 °C
Absorption cross-section	1.2X10-19 cm2
Stimulated emission cross-section (E\| \|a)	2.6X10-20 cm2
Laser wavelength	1023-1060 nm
Lasing threshold	35 mW
Stark levels energy (in cm-1) of the 2F5/2 manifolds of Yb3+ @ 77 K	10682, 10471, 10188
Stark levels energy (in cm-1) of the 2F7/2 manifolds of Yb3+ @ 77K	535, 385, 163, 0
optical damage threshold, GW/cm2	20

CY2256 Ytterbium-doped Potassium-Gadolinium Tungstate Crystal (Yb:KGW)

Description of Ytterbium-doped Potassium-Gadolinium Tungstate Crystal

Advantages of Yb: KGW

Specifications of Ytterbium-doped Potassium-Gadolinium Tungstate Crystal

Applications of Ytterbium-doped Potassium-Gadolinium Tungstate Crystal

Specification

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