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Products / 光学元件 /晶体 /非线性光学晶体 /KGW /

KGW

Overview Specification Order Now!

KGW(Potassium Gadolinium Tungstate) is a non-linear crystal that has good mechanical properties, high damage threshold, good thermal conductivity and a wide transparency range that makes it very compatible for SRS(Surface Raman Scattering) processes for picosecond applications.

They have two Raman modes at 768cm-1 and 901cm-1, which is also pump polarization dependent. They can also be used as frequency converters in tunable lasers to extend tuning range.

General Specifications
Material	KGW
Dimension Tolerance(mm)	±0.1
Surface Quality	10/5
Flatness	<λ/6@633nm
Wavefront Distortion	λ/8
Parallelism(arcsec)	<20
Damage Threshold(pulsed)	>10000 MW/cm2

Physical Properties and Optical Properties
Crystal symmetry	monoclinic, C2/c
Transmission range	0.35–5.5 µm
Density	7.27 g/cm³
Hardness Mohs	4-5
Refractive indices @ 1064 nm	n_g = 2.061; n_m = 2.010; n_p = 1.982
Raman shift	901 cm^-1 (p[mm]p) 768 cm^-1 (p[gg]p)
Raman gain, pump 1064 nm	3.3 cm/GW (901 cm^-1) 4.4 cm/GW (768 cm^-1)
Thermal conductivity, W/mK	K_a=2.6; K_b=3.8; K_c=3.4
∂n/∂T	0.4 × 10^-6 K^-1
Optical Damage Threshold	> 10 GW/cm²

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Dimension (mm)

Search Reset

Compare	Model		Drawings & Specs	Dimension (mm)	Thickness (mm)	Availability	Reference Price (USD)
		KGW-NLC-7-30 KGW, Non-Linear Crystal, Dimension=7x7mm, Thickness=30mm, b-cut		7x7	30	2-3 Weeks	Request for quote
		KGW-NLC-5x7.5-30 KGW, Non-Linear Crystal, Dimension=5x7.5mm, Thickness=30mm, b-cut		5x7.5	30	2-3 Weeks	Request for quote

KGW-NLC-5x7.5-30 - Parameter

Thickness Tolerance (mm)

± 0.1

Surface Quality

10/5

Dimension (mm)

5x7.5

Dimensional Tolerance (mm)

±0.1

Thickness (mm)

Flatness

<λ/6@633nm

Wavefront Distortion

λ/8

Parallelism (arcsec)

<20

Doping

undoped

KGW-NLC-7-30 - Parameter

Thickness Tolerance (mm)

± 0.1

Surface Quality

10/5

Dimension (mm)

7x7

Dimensional Tolerance (mm)

±0.1

Thickness (mm)

Flatness

<λ/6@633nm

Wavefront Distortion

λ/8

Parallelism (arcsec)

<20

Doping

undoped

KGW-NLC-5x7.5-30 - Download

KGW-NLC-7-30 - Download

Accessories

Compare	Model		Drawings & Specs	Availability	Reference Price (USD)