Nonlinear Optical Crystals: KTP

KTP (Potassium Titanyl Phosphate) crystals is the most commonly used material for frequency doubling of Nd-doped lasers, particularly at the low or medium power density.It is widely used for frequency mixing to generate Red/Green/Blue output, and for OPO and OPA to generate visible to mid-infrared tunable output. It is also used for many E-O devices such as Q-switches and E-O modulators.

Advantages:

• Large nonlinear optical coefficient
• Wide angular bandwidth and small walk-off angle
• Broad temperature and spectral bandwidth
• High Electro-Optics(E-O) coefficient and low dielectric constant
• Non-hygroscopic, chemically and mechanically stable

KTP’s Applications

• Frequency Doubling (SHG) of Nd-doped Lasers for Green/Red Output
  • Frequency Mixing (SFM) of Nd Laser and Diode Laser for Blue Output
  • Parametric Sources (OPG, OPA and OPO) for 600nm – 4500nm Tunable Ouptut
  • E-O Modulators, Optical Switches, Directional Couplers
  • Optical Waveguides for Integrated NLO and E-O Devices

 We offer KTP specification:

Tolerance of cutting angle	△θ≤±0.25°,△φ≤±0.25°
Tolerance of dimension	Dimension+/-0.1 mm，L：±0.1mm
Flatness	λ/8 @ 632.8nm
Wavefront distortion	λ/8@ 632.8nm
Surface quality	10/5  per MIL-O-13830A
Parallelism	10″
Perpendicularity	5′
Bevel/chamfer	<0.1mm@45deg.
Chips	<0.1mm
CA	>95%
Coating	AR/HR coating Upon customer’s request
Damage Threshold	750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz
Warranty	One year under proper use