RefractiveIndex.INFO

Refractive index database


nk database   |   n2 database   |   about

Shelf

Book

Page

Optical constants of KTiOPO4 (Potassium titanyl phosphate, KTP)
Kato and Takaoka 2002: n(α) 0.43–3.54 µm

Wavelength: µm
 (0.43–3.54)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2=3.29100+\frac{0.04140}{λ^2-0.03978}+\frac{9.35522}{λ^2-31.45571}$$

Comments

nα; 20 °C.

References

K. Kato and E. Takaoka. Sellmeier and thermo-optic dispersion formulas for KTP, Appl. Opt. 41, 5040-5044 (2002).

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

Potassium titanyl phosphate, KTiOPO4 (KTP)

Potassium titanyl phosphate (KTiOPO4, commonly abbreviated as KTP) is a nonlinear optical material widely used in a variety of photonic applications, including frequency doubling of laser sources, optical parametric oscillation, and electro-optic modulation. KTP exhibits a broad transparency range from approximately 350 nm to 4.5 μm. One of its noteworthy advantages is its high damage threshold, which makes it suitable for high-power laser applications. The crystal also exhibits good phase-matching conditions over an extensive range of wavelengths, making it a material of choice for tunable and multi-wavelength laser sources. It's commonly utilized in green laser pointers via frequency doubling of Nd:YAG or Nd:YVO4 lasers, which emit at 1064 nm. Overall, KTP's combination of optical and mechanical properties make it an important material in the field of nonlinear optics.

External links