Applications:
● Frequency Doubling (SHG) of Nd-doped Lasers for Green/Red Light Generation.
● Frequency Mixing (SFM) of Nd Laser and Diode Laser for Blue Light Generation.
● Parametric Sources (OPG, OPA and OPO)for 0.6um-4.5um Tunable output.
● E-O Modulators, Optical Switches, Directional Couplers.
● Optical Waveguides for Integrated NLO and E-O Devices, etc.
● PPKTP for device engineering etc.
CRYSTIK‘s KTP is featured by：
● Large nonlinear optical coefficient;
● Wide angular bandwidth and small walk-off angle;
● Broad temperature and spectral bandwidth;
● High electro-optic coefficient and low dielectric constant;
● Large figure of merit;
● Nonhydroscopic, chemically and mechanically stable.
CRYSTIK offers：
● Technical support;
● Strict quality control;
● Large crystal size up to 20x20x40mm3 and maximum length of 60mm;
● Quick delivery (2 weeks for polished only, 3 weeks for coated);
● Unbeatable price and quantity discount;
● AR-coating, mounting and re-polishing service.
Dimension Tolerance | W(+/-0.1)*H(+/-0.1)*L(+0.5/-0.1)mm | ||
Angle Tolerance | +/-0.25° | Perpendicularity | ≤10′ |
Scratch/Dig | 10/5 | Chamfer | ≤0.2mmx45° |
Parallelism | ≤10″ | Chips | ≤0.1mm |
Flatness | λ/10@633nm | Clear Aperture | ≥90% |
Wavefront distortion | λ/8@633nm
| ||
Coatings | C1---AR@1064(R<0.2%)&532(R<0.5%) C2---HR@1064(R>99.8%)&HT@532(T>95%) C3---AR@1064(R<0.2%)&1570(R<0.5%) C4---HR@1570(R>99.8%)&HT@1064(T>99.5%) C5---HR@1064(R>99.8%)&PR@1570(R=50,60,70%+/-2%) | ||
Damage Threshold | 500MW/cm² (1064nm, 10ns, 10Hz) | ||
KTP is a positive biaxial crystal, with the principal axes X, Y, and Z (nz>ny>nx) parallel to the crystallographic axes a, b, and c, respectively.
Physical Properties:
Crystal structure | Orthorhombic, space group Pna21,point group mm2 |
Cell parameters | a=6.404Å, b=10.616Å, c=12.814Å, Z=8 |
Melting point | Around 1172℃ |
Mohs hardness | 5 |
Density | 3.01 g/cm3 |
Color | colorless |
Hygroscopic susceptibility | no |
Thermal conductivity | 0.13 W/(cm*K-1) |
Thermo-optic Coefficient | dnx/dT=1.1x10-5/°C, dny/dT=1.3x10-5/°C, dnz/dT=1.6x10-5/°C |
Absorption coefficient | <0.1%/cm @ 1064nm, <1%/cm @ 532nm |
Optical Properties:
Transmitting range: | 350 nm - 4500 nm | |
SHG Phase Matchable Range | 497～1800nm (Type II) | |
Refractive indices: 1064nm 532nm | nx ny nz 1.7377 1.7453 1.8297 1.7780 1.7886 1.8887 | |
Sellmeier equations: (λ in μm) | nx2=3.0065+0.03901/(λ2-0.04251)-0.01327λ 2 | |
Nonlinear optical coefficients: | d31=6.5pm/v, d32=5pm/v, d33=13.7pm/v, d24=7.6pm/v, d15=6.1pm/v | |
Effective nonlinearity expressions | deff (d»(II)24 - d15 - (dqsin2f)sin215sin2 + df24cos2q)sinf | |
For type II SHG of a Nd:YAG Laser at 1064nm: | =23.5°f=90°, qPM angle: Effective SHG coefficient: deff8.3d»36(KDP) Angular bandwidth: 14.2mrad-cm (φ); 55.3mrad-cm (θ) Temperature bandwidth: 25℃-cm Spectral bandwidth: 5.6 Å -cm Walk-off angle: 0.55° | |
Electro-optic coefficients: | Low frequency (pm/V) High frequency (pm/V) | |
r13 | 9.5 | 8.8 |
r23 | 15.7 | 13.8 |
r33 | 36.3 | 35.0 |
r51 | 7.3 | 6.9 |
r42 | 9.3 | 8.8 |
Dielectric constant: | eeff=13 | |
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