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RTP

Rubidium Titanyle Phosphate RTP is an isomorph of KTP crystal. RTP is used in various nonlinear and electro optical applications because of its‘ good physical properties in range of 350nm to 4500nm. Compared with KTP, RTP has 1.8 times higher damage threshold. Laser systems with RTP crystals are very reliable because of it high resistivity no induced piezo-electric effect with electrical signals up to 60 kHz.

 

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Optola offers various dimensions of RTP crystals upon request.

Length tolerance, mm +/ -0.2
Width and height tolerance, mm +/-0.1
Parallelism < 30″
Perpendicularity < 15′
Surface quality 20/10
Crystal structure Orthorhombic
Mohs hardness 5
Density, g/cm3 3.6
Melting Point About 1000˚C
Thermal Expansion Coefficients (/K) αx=1.01×10-5, αy =1.37×10-5, αz =-4..17×10-6
Sellmeier equations(λ in um) nx2=2.15559+0.93307[1-(0.20994/λ)2]-0.01452λ2
ny2=2.38494+0.73603[1-(0.23891/λ)2]-0.01583λ2
nz2=2.27723+1.11030[1-(0.23454/λ)2]-0.01995λ2
Thermo-optical coefficients (dλ/dT) -0.029 nm / °C
Electro-optic constants(Y-cut)

                               (X-cut)

r33=38.5 pm/V

r33=35 pm/V,r23=12.5 pm/V, r13=10.6 pm/V

Electrical Resistivity About 1011-1012ohm·cm
Static Half Wave Voltage at 1064 nm 4x4x20mm:1,600V
6x6x20mm:2,400V
9x9x20 mm: 3,600 V
Extinction Ratio >20dB@633nm
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