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DESCRIPTION

Basic Info

After-sales Service	Respond Within 24 Hours After Receiving Feedback.
Warranty	1 Year
Customized	Customized
Standard Component	Standard Component
Type	Laser Source
Transport Package	as Request
Specification	customized
Trademark	optu
Origin	Chengdu
HS Code	9001909090
Production Capacity	5000 Pieces / Year

Product Description

Descriptions:

 

KTP Nonlinear crystal Potassium Titanyl Phosphate is the most commonly used material for frequency doubling of Nd-doped lasers, particularly at the low or medium power density. It is widely used for frequency mixing to generate Red/Green/Blue output, and for OPO and OPA to generate visible to mid-infrared tunable output. It is also used for many E-O devices such as Q-switches and E-O modulators.

 

Main applications:
1) Frequency Doubling (SHG) of Nd-doped Lasers for Green/Red Output;
2) Frequency Mixing (SFM) of Nd Laser and Diode Laser for Blue Output;
3) Parametric Sources (OPG, OPA and OPO) for 600nm - 4500nm Tunable Ouptut;
4) E-O Modulators, Optical Switches, Directional Couplers;
5) Optical Waveguides for Integrated NLO and E-O DevicesOPA and OPO.

 

Advantages:
1) Large nonlinear optical coefficient;
2) Wide angular bandwidth and small walk-off angle
3) Broad temperature and spectral bandwidth;
4) High Electro-Optics(E-O) coefficient and low dielectric constant;
5) Non-hygroscopic, chemically and mechanically stable

 

Optical and Nonlinear properties of KTP crystal

Transparency Range	350~4500nm
SHG Phase Matchable Range	497 ~ 1800nm (Type II)
Therm-optic Coefficient (/ºC, λ in μm)	dnx/dT=1.1X10-5dny/dT=1.3X10-5dnz/dT=1.6X10-5
Absorption Coefficients	<0.1%/cm at 1064nm <1%/cm at 532nm
Angle Acceptance	14.2mrad·cm (φ);55.3mrad·cm (θ) for Type II SHG of a Nd:YAG laser at 1064nm
Temperature Acceptance	24°C·cm for Type II SHG of a Nd:YAG laser at 1064nm
Spectral Acceptance	0.56nm·cm for Type II SHG of a Nd:YAG laser at 1064nm
Walk-off Angle	0.55° for Type II SHG of a Nd:YAG laser at 1064nm
NLO Coefficients	deff(II)≈(d24 - d15)sin2Φsin2θ - (d15sin2Φ + d24cos2Φ)sinθ
Non-vanished NLO susceptibilities	d31=6.5 pm/V d24=7.6 pm/Vd32= 5 pm/V d15=6.1 pm/Vd33=13.7 pm/V
Sellmeier Equations (λ in μm)	nx2=3.0065+0.03901/(λ2-0.04251)-0.01327λ2ny2=3.0333+0.04154/(λ2-0.04547)-0.01408λ2nz2=3.3134+0.05694/(λ2-0.05658)-0.01682λ2
Electro-optic Coefficients:r13r23r33r51r42	Low and High frequency (pm/V)9.5 and 8.815.7and 13.836.3 and 357.3 and 6.99.3 and 8.8
Relative Dielectric Constant	εeff=13

Physical properties of KTP crystal

Crystal Structure	Orthorhombic, space group Pna21,point group mm2
Lattice Parameter	a=6.404Å, b=10.616Å, c=12.814A, Z=8
Melting Point	About 1172°C
Mohs Hardness	5
Density	3.01 g/cm3
Refractive indices	nX = 1,7404; nY = 1,7479; nZ = 1,8296 @1064 nm
Thermal Conductivity	13W/m/K
Thermal Expansion Coefficients	ax=11x10-6/ºC, ay=9x10-6/ºC, az=0.6x10-6/ºC

 

OPTU offers KTP specifications:

Tolerance of cutting angle	△θ≤±0.25°,△φ≤±0.25°
Tolerance of dimension	Dimension+0/-0.1 mm,L:±0.1mm
Flatness	λ/10 @ 632.8nm
Wavefront distortion	λ/[email protected] 632.8nm
Surface quality	10/5 per MIL-O-13830A
Parallelism	20″
Perpendicularity	5′
Clear Aperture:	> 90%
Chamfer:	< 0.1 mm @ 45°
Size	Upon customer request
Coating	AR/HR coating upon customer's request
Damage Threshold	750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz
Quality Warranty Period	One year under proper use