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KTP single crystal

KTP single crystal


Product Introduction
 

By hydrothermal method grown potassium titanyl phosphate (KTiOPO4, abbreviated: KTP) crystal is a very good performance nonlinear optical crystal, with a large nonlinear coefficient, matching and allowable angle permissible temperature range matching. Gray track resistance, resistance to high laser damage threshold, chemical, mechanical stability and other characteristics, can be used for laser frequency, and frequency mixing, parametric oscillation and optical waveguide devices, electro-optic modulator, widely used in military research, health care, ocean Optics, laser weapons, and environmental remote sensing and other fields.
 

Crystal structure

Orthorhombic

Lattice parameters

A=6.404 a, b=10.616 a, c=12.814 a, Z=8

Melting point

1172°C

Curie point

936°C

Mohs hardness

5

Density

3.01g/cm3

Linear absorption coefficient

<0.1%/cm at 1064nm <1%/cm at 532nm

Deliquescence

No deliquescence

The relative dielectric constant

Eeff=13

Specific heat

0.1643 cal/g.°C

Conductivity

3.5x10-8 s/cm (c-axis, 22°C, 1KHz)

Thermal conductivity

13W/m/K

Transmission range

350~4500nm

Absorption coefficient

< 1%/cm @1064n M and 532 N M

SHG phase matching range

0.984-3.4 M

Calorescence coefficient (/ ℃)

dnx/dT=1.1x10-5/℃

dny/dT=1.3x10-5/℃

dnz/dT=1.6x10-5/℃

Nonlinear coefficient

d31=2.54pm/V, d31=4.35pm/V, d31=16.9pm/V

d24=3.64pm/V, d15=1.91pm/V at 1.064 &micro;m

deff(II)≈ (d24-d15)sin2φsin2θ-(d15sin2φ+d24cos2φ)sinθ

Sellmeier equation (λ in μm)

nx2=3.0065+0.03901/(λ2-0.04251)-0.01327λ2

ny2=3.0333+0.04154/(λ2-0.04547)-0.01408λ2

nz2=3.3134+0.05694/(λ2-0.05658)-0.01682λ2

Damage threshold

> 450MW/cm2, (@1064nm 10ns, 10Hz)

 

Directional accuracy

Δθ<0.5°, Δφ<0.5°

Dimensional tolerance

±0.1mm

Standard Size

3×3×5mm, 5×5×5mm, 5×5×15mm, 10×10×15mm, 15×15×15mm

Surface finish

10/5

Clear aperture

>95%

Face type

<λ/8@633nm

Wavefront distortion

<λ/4@633nm

Parallelism

<20秒

Verticality

<15分

Residual reflectivity

<0.2%@1064nm, <0.5%@532nm

Shelf life

1 year

Coating

AR/AR@1064&532nm: 

S1&S2 AR@1064&532nm, R<0.25%@1064nm, R<0.5%@532nm

HR/AR@1064&532nm:

S1 HR@1064nm&HT@532nm, R>99.8%@1064nm, R<5%@532nm

S2 AR@1064&532nm, R<0.25%@1064nm, R<0.5%@532nm

 

Features of KTP crystal
 

1- Large receiving angle, small off-angle

2- wide temperature and spectral bandwidth

3- High photoelectric coefficient and low dielectric constant

4- No deliquescence, stable chemical and mechanical properties

5- High conversion efficiency

6- Large nonlinear coefficient

7- Good thermal conductivity

 

 
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