Quality Reliable KTP Grown In-house
• High homogeneity
• Excellent internal quality
• Top quality of surface polishing
• Large block for various size (20x20x40mm, max length 60mm)
• Large nonlinear coefficient, high conversion efficiency
• Low insertion losses
• Very competitive price
• Mass production, quick delivery
SHG KTP crystal
• Low bulk absorption: 100ppm/cm at 1064nm
• High damage threshold of AR-coatings: >10J/cm² at 1064nm for 10ns pulses
• Available in GTR (grey-track resistance) KTP
OPO KTP crystal
• Guaranteed non-linear optical homogeneity
• High damage threshold of AR-coatings: >10J/cm² at 1064nm for 10ns pulses
• OPO mirror coatings on KTP parts (monolithic OPO) are available
KTP Crystal Features
• Large Nonlinear Optical (NLO) Coefficients
• Wide Phase-matching Acceptance Angle
• Broad Temperature and Spectral Bandwidth• High Electro-Optic (E-O) Coefficients
• Nonhygroscopic, Good Chemical and Mechanical Properties
• Relatively High Damage Threshold for E-O modulator
KTP Crystal Applications
1. SHG of Nd:Laser - KTP is the most commonly used material for
frequency doubling of Nd:YAG and other Nd-doped lasers, particularly
when the power density is at a low or medium level. To date, extra- and
intra-cavity frequency doubled Nd:lasers using KTP have become a
preferred pumping source for visible dye lasers and tunable Ti:Sapphire
lasers as well as their amplifiers. 1mW to 3W TEMoo green laser can be
generated by intracavity SHG in Nd:YVO4 and Nd:YAG laser.
KTP is
also being used for intracavity mixing of 0.81µm diode and 1.064µm
Nd:YAG laser to generate blue light and intracavity SHG of Nd:YAG or
Nd:YAP lasers at 1.3µm to produce red light.
2. OPO/OPA - KTP is suitable for Nd:YAG and SHG or Ti:Sapphire laser pumped OPO/OPA. Pumped by the fundamental and second harmonic of a
Nd:YAG or Nd:YLF laser, KTP's OPO/OPA can generate tunable output in
600-4500nm.
3. E-O Modulator - KTP is used as E-O modulator in mode-locking diode laser pumped Nd:YAG and Nd:YLF laser as well as Ti:Sapphire and Cr:LiSrAlF6 laser. Due to its higher damage threshold, wide optical bandwidth, low loss, good thermal and mechanical stability, KTP is expected to replace LiNbO3 crystal in application of E-O modulators.
4. Application for Optical Waveguides - Based on the ion-exchange
process on KTP substrate, KTP optical waveguides have created novel
applications in integrated optics. Recently, a type II SHG conversion
efficiency of 20%/W/cm2 was achieved by the balanced phase matching, in
which the phase mismatch from one section was balanced against a phase
mismatch in the opposite sign from the second. Furthermore, segmented
KTP waveguides have been applied to the type I quasi-phase-matchable SHG
of a tunable Ti:Sapphire laser in the range of 760-960nm, and directly
doubled diode lasers for the 400-430nm outputs.
Dimension Tolerance | ± 0.1 mm |
Angle Tolerance | < ± 0.25° |
Flatness | < λ/8 @ 632.8 nm |
Surface Quality | < 10/5 [S/D] |
Parallelism | < 20” |
Perpendicularity | ≤ 5' |
Chamfer | ≤ 0.2 mm @ 45° |
Transmitted Wavefront Distortion | < λ/8 @ 632.8 nm |
Clear Aperture | > 90% central area |
Coating | AR coating: R<0.2% @ 1064nm, R<0.5% @ 532nm |
Laser Damage Threshold | 500 MW/cm2 for 1064nm, 10ns, 10Hz (AR-coated) |
* Products with special requirement upon request. |