Description

KTP Non-Linear Crystal is the most widely used material for frequency doubling of YAG(Nd) and other Nd-doped lasers, particularly at low or medium power density. Extra- and intra-cavity frequency-doubled Nd lasers using KTP have become a preferred pumping source for visible dye lasers and tunable Sapphire(Ti) lasers, as well as their amplifiers. It is also a useful green source for many research and industry applications. The material is potassium titanyl phosphate.

KTP Non-Linear Crystal: the green standard

The 1064-to-532 nm conversion is the job KTP is famous for. Large nonlinear optical coefficient drives the efficiency. Wide angular bandwidth and small walk-off angle keep alignment forgiving. Broad temperature and spectral bandwidth add operating tolerance. For instance, green laser pointers and lab sources alike rely on it. High electro-optic coefficient and low dielectric constant make it equally useful for modulation.

Beyond doubling

Frequency mixing (SFM) of Nd laser and diode laser light generates blue. Parametric sources — OPG, OPA, and OPO — deliver tunable output. E-O modulators, optical switches, and directional couplers use the electro-optic coefficient. Optical waveguides serve integrated NLO and E-O devices.

KTP Non-Linear Crystal stability

KTP is non-hygroscopic: it does not absorb moisture from the air. It is chemically and mechanically stable.

Typical applications

Frequency doubling (SHG) of Nd-doped lasers for green light generation. Frequency mixing (SFM) for blue light generation. Parametric sources for tunable output. E-O modulators, optical switches, and directional couplers. Optical waveguides for integrated devices. For higher gray-track resistance, see our HGTR-KTP grade.

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