| Description: | ◇RTP is an isomorph to Potassium Titanyl Phosphate (KTiOPO4, KTP), a highly efficient non-linear crystalline material. | ||
| Application: | ◆Now widely used for Electro Optical applications whenever low switching voltages are required. | ||
| ◆Used as pulse-picker in femto-second train | |||
| ◆Used as Q-switch at high repetition rate. | |||
| Feature: | ◇Excellent crystal for Electro-Optical applications at high repetition rate. | ||
| ◇High Damage Threshold,low Insertion Loss. | |||
| ◇Does not induce piezo-electric effect | |||
| ◇Non-hygroscopic. | |||
| ◇High Extinction and Contrast Ratio | |||
| ◇Reliable homogeneity | |||
| ◇Stability over a wide temperature range (-60ºC – +70ºC) | |||
| Main Specification | Material | RbTiOPO4 | |
| Orientation accuracy of cut angle | +/-0.5° (standard), +/-0.1° on request | ||
| Angle tolerance | △q < 0.5°, △f < 0.5° | ||
| Dimension tolerance | +/-0.1 mm Length +0.3/-0.2 mm | ||
| Flatness | <l/8 @633nm | ||
| Scratch/Dig code | Scratch/Dig 10/5 | ||
| Parallelism | < 30 arc sec | ||
| Perpendicularity | < 30 arc min | ||
| Transmitting wavefront distortion | < l/8 @ 633nm | ||
| Clear aperture | >90% central area | ||
| Crystal Structure | Orthorhombic Point Group mm2 | ||
| Lattice parameters | a = 12.96 A°,b = 10.56 A,c = 6.49A° | ||
| Melting Point | ~ 1000 °C | ||
| Curie temperature | ~810°C | ||
| Hardness | ~5 | ||
| Density | 3.6 g/cm3 | ||
| Absorption Coefficient | < 0.05 % / cm @ 1064 nm < 4 % /cm @ 532 nm | ||
| Hygroscopic Susceptibility | No | ||
| Resistivity/(20°C, 20% Humidity), Ohm.cm | 1012 | ||
| Dielectric constant | Eeff = 13.0 | ||
| Thermal Expansion Coefficients (in the range of 25°C- 900°C) |
a1=1.01x10-5, a2=1.37x10-5, a3=-4.17x10-6 | ||
| Ionic conductivity (room temperature, 10kHz) | 10-8 S/cm | ||
| Linear Optical Properties | Transparency Range | 350 ~ 4500 nm | |
| Sellmeier Equations | nx2=2.15559 + 0.93307[1-(0.20994/λ)2] - 0.01452λ2 ny2=2.38494 + 0.73603[1-(0.23891/λ)2] - 0.01583 λ2 nz2=2.27723 + 1.11030[1-(0.23454/λ)2] - 0.01995λ2 |
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| Nonlinear Optical Properties | For Type II SHG of a Nd:YAG laser at 1064nm | ||
| Nonlinear coefficients (@ 1064nm) |
d31=2.54pm/V, d31=4.35pm/V, d31=16.9pm/V d24=3.64pm/V, d15=1.91pm/V |
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| Electro-Optic Coefficients/(pm/V) | |||
| Electro-optical constants (@ 633 nm, 1 kHz), pm. V-1 | r33=33.0 r13=10.9 r23=15.0 |
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| Static Half Wave Voltage @1064nm | 1445 V for a pair of 4x4x10mm 1,600 V for a pair of 4x4x20mm 1,700 V for a pair of 6x6x7mm 2,400 V for a pair of 6x6x20 mm |
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| Damage Threshold pulse 10 nsec |
> 600 MW/cm2 @ 1064 nm | ||
