KDP&DKDP Crystal-Nonlinear Crystals-Crysmit Photonics CO.,Ltd

KDP&DKDP Crystal

High optical damage threshold and high birefringence.
Transmission wavelength range: 200-2150nm.
Excellent UV transmission.
Electro-optical modulator and Q switches.
Second, third, and fourth harmonic generation, frequency doubling of Nd:YAG laser.
High power laser frequency conversion material.
Offer Technical support.

General Product

Description

Specification

Literature

Part No.

Material

Size

Theta

Phi

Coating

Application

Mounted

Delivery

Price

Add to CART

Part No.	Material	Size	Theta	Phi	Coating	Application	Mounted	Delivery	Price	Add to CART
KDP Crystal CY01	KDP Crystal	12x12x5 mm	76.5°	45°	AR/AR@532/266nm	SHG@532nm	Unmounted	2 weeks	$300
KDP Crystal CY02	KDP Crystal	15x15x7 mm	76.5°	45°	AR/AR@532/266nm	SHG@532nm	Unmounted	2 weeks	$350
DKDP Crystal CY03	DKDP(KD*P) Crystal	15x15x13 mm	36.5°	45°	AR/AR@1064+532nm	SHG@1064nm	Unmounted	2 weeks	$400
DKDP Crystal CY04	DKDP(KD*P) Crystal	15x15x13 mm	53.5°	0°	AR/AR@1064+532nm	SHG@1064nm	Unmounted	2 weeks	$400
DKDP Crystal CY05	DKDP(KD*P) Crystal	12x12x20 mm	59.3°	0°	AR/AR@1064+532/355nm	THG@1064nm	Unmounted	2 weeks	$500
DKDP Crystal CY06	DKDP(KD*P) Crystal	12x12x20 mm	53.5°	0°	AR/AR@1064/1064+532nm	SHG@1064nm	Unmounted	2 weeks	$500
DKDP Crystal CY07	DKDP(KD*P) Crystal	15x15x20 mm	53.5°	0°	AR/AR@1064/1064+532nm	SHG@1064nm	Unmounted	2 weeks	$550
DKDP Crystal CY08	DKDP(KD*P) Crystal	15x15x20 mm	59.3°	0°	AR/AR@1064+532/355nm	THG@1064nm	Unmounted	2 weeks	$550

Potassium Dihydrogen Phosphate (KDP) and Potassium Dideuterium Phosphate (DKDP) are among the most widely-used commercial NLO materials, characterized by good UV transmission, high damage threshold, and high birefringence, though their NLO coefficients are relatively low. They are usually used for doubling, tripling and quadrupling of a Nd:YAG laser under the room temperature. In addition, they are also excellent electro-optic crystals with high electro-optic coefficients, widely used as electro-optical modulators, such as Q-switches, Pockels Cells, etc.

CRYSMIT's KDP & KD*P products

CRYSMIT supplies high quality KDP and DKDP crystals in large quantities for these applications. Because their polished surfaces are easier to be moistened, the user is advised to provide the dry condition (＜50%) and the sealed housing for preservation. For this purpose, CRYSMIT also provides polishing, coating and sealed housing services for the KDP family crystals. Our engineers will serve you to select and design the best crystal, according to the laser parameters you provide.

Basic Properties

	DKDP	KDP
ChemicalFormula	KD2PO4	KH2PO4
TransparencyRange	200-2100nm	200-1650nm
TransparencyRange	(98%deuteriumcontent)	200-1650nm
NonlinearCoefficients	d36=0.40pm/V	d36=0.44pm/V
RefractiveIndex(at1064nm)	no=1.4948,ne=1.4554	no=1.4938,ne=1.4599
Electro-opticCoefficients	r41=8.8pm/V	r41=8.8pm/V
Electro-opticCoefficients	r63=25pm/V	r63=10.3pm/V
LongitudinalHalf-waveVoltage	Vπ=2.98KV(λ=546nm)	Vπ=7.65KV(λ=546nm)
AbsorptionCoefficients	0.006/cm	0.07/cm
DamageThreshold	>3GW/cm2	>5GW/cm2
ExtinctionRatio	30dB
SellmeierEquationsofDKDP:(λinµm)
no2=1.9575544+0.2901391λ2/(λ2-0.0281399)-0.02824391λ2+0.004977826λ4
ne2=1.5057799+0.6276034λ2/(λ2-0.0131558)-0.01054063λ2+0.002243821λ4
Sellmeier Equations of KDP: (λ in µm)
no2=2.259276+0.01008956/(λ2-0.012942625)+13.00522λ2/(λ2-400)
ne2=2.132668+0.008637494/(λ2-0.012281043)+3.2279924λ2/(λ2-400)

Clear Aperture	Central 90% of the diameter
Surface Quality	20/10 to MIL-PRF-13830B
Flatness	λ/8 @633 nm
TWD	＜λ/4 @633 nm
Parallelism	20 arc sec
Perpendicularity	＜15 arc min
Angle Tolerance	±0.5°
Quality Warranty Period	One year under proper use