Crystal 1-150 Mm Polished Ktp, Ktiopo4 And Ktp Crystal, Large Nonlinear Optical Coefficients

Potassium Titanyl Phosphate (KTiOPO4 or 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. It is a nonlinear crystal mostly used in extracavity configuration when a single pass through the crystal is required. KTP has large nonlinear coefficient and its effective nonlinear optical coefficient deff at 1064nm is more than 1.5 times that of BBO. Also, its damage threshold is near 1 GW/cm2 for 1 Hz 10 ns pulses at 1064nm.

KTP crystals from Photonchina are optimized for SHG intracavity configuration in low peak power CW lasers and are ideal choice in the visible to infrared spectral region with relatively low cost. They are widely seen in both commercial and military lasers including laboratory and medical system, range-finders, LiDAR, optical communication and industrial systems.
Properties of KTP/KTA Single Crystal
KTP and KTA(KTiOAsO4), also known as Potassium Titanyl Arsenate, are widely used in frequency doubling of Nd-doped laser systems for Green/Red output; parametric sources(OPG, OPA and OPO) for 600nm-4500nm tunable output; E-O modulators, Optical Switches, Directional Couplers, Optical Waveguides for Integrated NLO and E-O Devices etc.

KTP features,
a cLarge nonlinear optical coefficients
a cWide angular bandwidth and small walk-off angle
a cBroad temperature and spectral bandwidth
a cNonhydroscopic, chemically and mechanically stable
a cHigh thermal conductivity
a cFlux grown, extremely low cost compared to KTA, BBO and LBO
a cHigh damage threshold, low absorption
a cProduction capacity to support industrial customers
a cHigh performance optical coating, mounting service

Applications of Photonchinaa s KTP:
In short, KTP mainly has the following usage,
i Frequency Doubling (SHG) of Nd-doped Lasers for Green/Red Output
i Frequency Mixing (SFM) of Nd Laser and Diode Laser for Blue Output
i Parametric Sources (OPG, OPA and OPO) for 0.6mm-4.5mm Tunable Output
i Electrical Optical(E-O) Modulators, Optical Switches, and Directional Couplers
i Optical Waveguides for Integrated NLO and E-O Devices
In a more specific way, KTP has applications as follows,
Frequency Conversion:
KTP was first introduced as the NLO crystal for Nd doped laser systems with high conversion efficiency. Under certain conditions, the conversion efficiency was reported to 80%, which leaves other NLO crystals far behind.
With the development of laser diodes, KTP is widely used as SHG devices in diode pumped Nd:YVO4 solid laser systems to output green laser, and also to make the laser system very compact.
KTP for OPA, OPO Applications:
In addition to its wide use as a frequency doubling device in Nd-doped laser systems for Green/Red output, KTP is also one of the most important crystals in parametric sources for tunable output from visible (600nm) to mid-IR (4500nm) due to the popularity of its pumped sources, the fundamental and second harmonic of a Nd:YAG or Nd:YLF lasers.
One of the most useful applications is the non-critical phase-matched (NCPM) KTP OPO/OPA pumped by the tunable lasers to obtain a high conversion efficiency.
KTP OPO results in stable continuous outputs of femto-second pulse of 108 Hz repetition rate and milli-watt average power levels in both signal and idler outputs.
Pumped by Nd-doped lasers, KTP OPO has obtained above 66% conversion efficiency for down-conversion from 1060nm to 2120nm.
Electro-Optical modulators:
Except for unique NLO features, KTP also has promising E-O and dielectric properties that are comparable to LiNbO3. These advantaged properties make KTP extremely useful to various E-O devices.

Specifications of Photonchina KTP productsi
a c Standard size: 6x6x5mmi 9x9x5mmi 5x5x20mm,with the maximum length of 60mm.
a c Clear aperture: a Y90%
a c No visible scattering paths or centers when inspected by a 50mW green laser
a c Flatness: less than I /8 @ 633nm
a c Transmitting wavefront distortion: