Nonlinear Crystals: KDP

Nonlinear Crystals: KDP


Nonlinear Crystals KDP

KDP (Potassium Dihydrogen Phosphate) is a nonlinear crystal widely used in various applications, particularly in high-power laser systems for frequency conversion, harmonic generation, and optical parametric amplification. KDP has a high nonlinear coefficient, wide transparency range, and good optical, mechanical, and thermal properties, making it a popular choice for many laser applications.

In frequency conversion, KDP is used to convert the frequency of laser light by doubling, tripling or quadrupling its frequency. This process is important for generating laser radiation at wavelengths that are not directly available from laser sources, such as ultraviolet (UV) or deep ultraviolet (DUV) light. KDP is also used for harmonic generation in laser-based atomic physics experiments, and as a nonlinear element in optical parametric amplification systems.

KDP crystals have a relatively high damage threshold, which makes them suitable for use in high-power laser applications. They also have good optical properties, including a high refractive index, high birefringence, and low absorption in the visible and near-infrared regions. However, KDP is susceptible to photorefractive damage, which can limit its useful lifetime in some applications.

Transparency range, µm 0.174 - 1.57
Symmetry class 42m
Lattice parameters, Å a=b=7.453; c=6.975
Density, g/cm3 2.338
Mohs hardness 2.5
Refractive index at 407.8 nm : no=1.52301; ne=1.47898
at 632.8 nm no=1.50737; ne=1.46685
at 1064 nm no=1.4938; ne=1.4599
Non-linear coefficient at 1.064 µm, pm/V d36 = 0.39
Optical damage threshold, MW/cm2 300 - 600 (1064 nm, 20 ns)

Order Form

Drag and drop files here or Browse
*You can upload your specification file here. Max 5MB. Allowed File Types: JPG, PNG, PDF

About Semiconductor Electronics

SEMI EL project is a global supplier of materials, equipment, spare parts and supplies for the semiconductor industry.

Learn more...

Get In Touch


Join Our Community

Sign up to receive email for the latest information.