KDP, DKDP Crystals

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KDP, DKDP Crystals

Nonlinear single crystals KDP and DKDP are widely used as the second, third and fourth harmonic generators for Nd:YAG and Nd:YLF lasers.

Aperture Tolerance, mm	+0/-0.1
Laser Damage Threshold, J/cm²	>10 GW/cm2 (for KDP) and >0.5 GW/cm2 (for DKDP) for 10 ns pulses @ 1064 nm
Length Tolerance, mm	+0/-0.1
Orientation Accuracy of Cut Angle, arcmin	< 30 arcmin
Parallelism, arcsec	<20 arcsec
Perpendicularity, arcmin	<5 arcmin
Surface Flatness	L/8 @ 632.8 nm
Surface Quality, S-D	20-10 S-D
Transparency Range, nm	160-2800 nm

Description

Details

Crystals are also widely used for electro-optical applications as Q-switches for Nd:YAG, Nd:YLF, Ti:Sapphire and Alexandrite lasers, as well as for Pockels cells. The most commonly used electro-optical crystal is DKDP with a deuteration more than 98%. These crystals are grown by a water-solution method and can be grown up to very large sizes. Therefore, they are as low-cost and large-size finished non-linear components available. For frequency-doubling (SHG) and -tripling (THG) of Nd:YAG laser at 1064 nm, both type I and type II phase-matchings can be employed for Nonlinear single crystals KDP and DKDP. For frequency - quadrupling (4HG, output at 266 nm) of Nd:YAG laser KDP crystal is normally recommended.
We offer large aperture KDP crystals (up to 400x400mm and 10- 50mm length).

Features

Good UV transmission
High optical damage threshold
High birefringence
High nonlinear coefficients

Name	Aperture x length, mm	Application	Crystal	Orientation Theta/Phi, deg	Protective Coatings S1/S2, nm/nm	Price	Quantity
4-DKD-1250-0	12 x 12 x 20	SHG@1064nm, Type II	DKDP	53.5/0	1064/1064+532	US$617.50
4-DKD-1250-0	12 x 12 x 20	SHG@1064nm, Type II	DKDP	53.5/0	1064/1064+532	US$617.50
4-DKD-1250-1	12 x 12 x 20	THG@1064nm, Type II	DKDP	59.3/0	1064+532/355	US$617.50
4-DKD-1250-1	12 x 12 x 20	THG@1064nm, Type II	DKDP	59.3/0	1064+532/355	US$617.50
4-DKD-1513-0	15 x 15 x 13	SHG@1064nm, Type II	DKDP	53.5/0	1064+532/1064+532	US$630.50
4-DKD-1513-0	15 x 15 x 13	SHG@1064nm, Type II	DKDP	53.5/0	1064+532/1064+532	US$630.50
4-DKD-1513-1	15 x 15 x 13	SHG@1064nm, Type I	DKDP	36.5/45	1064+532/1064+532	US$630.50
4-DKD-1513-1	15 x 15 x 13	SHG@1064nm, Type I	DKDP	36.5/45	1064+532/1064+532	US$630.50
4-DKD-1520-0	15 x 15 x 20	SHG@1064nm, Type II	DKDP	53.5/0	1064/1064+532	US$752.70
4-DKD-1520-0	15 x 15 x 20	SHG@1064nm, Type II	DKDP	53.5/0	1064/1064+532	US$752.70
4-DKD-1520-1	15 x 15 x 20	THG@1064nm, Type II	DKDP	59.3/0	1064+532/355	US$752.70
4-DKD-1520-1	15 x 15 x 20	THG@1064nm, Type II	DKDP	59.3/0	1064+532/355	US$752.70
4-KDP-1250-0	12 x 12 x 5	SHG@532nm, Type I	KDP	76.5/45	532/266	US$526.50
4-KDP-1250-0	12 x 12 x 5	SHG@532nm, Type I	KDP	76.5/45	532/266	US$526.50
4-KDP-1570-0	15 x 15 x 7	SHG@532nm, Type I	KDP	76.5/45	532/266	US$624.00
4-KDP-1570-0	15 x 15 x 7	SHG@532nm, Type I	KDP	76.5/45	532/266	US$624.00