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GTR-KTP Crystal

● Low absorption at 1064nm & 532nm

● Higher grey track resistance than normal KTP (5X-10X)

● Higher efficiency than normal KTP

● Broad temperature bandwidth

● High quality crystals with competitive pricing

● Non-hydroscopic, chemically and mechanically stable

● High thermal conductivity

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Product Details

Gray Track Resistant (GTR) KTP crystals developed by hydrothermal method overcomes the common phenomenon of electrochromism of the flux-grown KTP, thus has many advantages such as high electrical resistivity, low insertion loss, low half-wave voltage, high laser damage threshold, and wide transmission band. So it's very suitable for high power density applications, where regular flux-grown KTP crystals will suffer from gray track damage.

GTR-KTP crystal has gray track resistance sufficiently greater than typical flux-grown KTP. It has wide angular bandwidth and small walk-off angle and broad temperature and spectral bandwidth. GTR-KTP crystals can be widely used in medical, military and meteorology fields.

GTR-KTP Applications

• SHG of Nd-doped laser
• Frequency mixing (SFM) of Nd and diode lasers to produce blue outputs
• Parametric sources (OPG, OPA and OPO) for 600 - 4500nm tuneable outputs
• EO modulators, optical switches and directional couplers
• Optical waveguides for integrated NLO and EO devices
• SHG and THG using high power Nd:YAG (1342 and 1319nm)

GTR-KTP Optical Specifications

Dimensions	As large as 10×10×15mm
Extinction Ratio	>25 dB
Optical Transparency Range	500~2500 nm
Laser-induced Damage Threshold	>600 MW/cm² @1064nm,10ns,10Hz, AR coated
Insertion Loss	<1.0% @1064nm
Operation Temperature	-40 ℃~+70 ℃
Frequency Range	as high as 4 MHz

GTR-KTP Processing Specifications

Dimension Tolerance	(W +/-0.1 mm) x (H+/-0.1 mm) x (L + /-0.2 mm)
Transmitting Wavefront Distortion	lambda/8 @ 633 nm
Clear Aperture	> 90% central area
Flatness	lambda/8 @ 633 nm
Surface Quality (Scratch/Dig)	10/5 per MIL-O-13830B
Parallelism	< 20 arc seconds
Perpendicularity	<15 arc minutes
Angle Tolerance	Dq <0.3, Df <0.3
AR Coating	R< 0.1% at 1064nm and R<0.3% at 532 nm