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KGW

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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

ng = 2.061; nm = 2.010; np = 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

Ka=2.6; Kb=3.8; Kc=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 Price
(USD)
KGW-NLC-7-30
KGW, Non-Linear Crystal, Dimension=7x7mm, Thickness=30mm, b-cut
7x730 In Stock Request for quote
KGW-NLC-5x7.5-30
KGW, Non-Linear Crystal, Dimension=5x7.5mm, Thickness=30mm, b-cut
5x7.530 In Stock 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)
30

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)
30

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

Motorized Actuator Adapters

Compare Model Drawings & Specs Availability Price
(USD)