RTP (Electro-optic Crystal)

RTP (Electro-optic Crystal)
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Crylink’s RTP electro-optic crystals, also known as titanium rubidium phosphate crystals. They are a kind of electro-optical crystals with excellent synthesis. It has a wide range of electro-optical applications with low switching voltage. With a high damage threshold, low insertion loss, no piezoelectric effect, high extinction contrast, and reliable homogeneity, it can be used in pulse selector, optical parametric oscillation, electro-optical Q-switching, and laser power or phase modulation.

Features of RTP Electro-optic Crystals:

  • High resistivity
  • High extinction ratio
  • No piezoelectric effect
  • Wide range of transparency
  • High damage threshold
  • High temperature stability
  • Low half-wave voltage
  • Suitable for high frequency operation
  • Stable mechanical and chemical properties

Crystal Specifications

Dimensional Tolerance±0.1mm
Flatness
＜λ/8@633nm
Surface Finish
10/5 S/D
Parallelism
<30 arc second
Perpendicularity
<30 arc-mim
Angle ToleranceΔθ<0.5°，ΔΦ<0.5°
CoatingAR
Clear Aperture
>90% central area
Wavefront Distortion
<λ/8@633nm

Crystal Physicochemical Properties

Crystal Structure
Rhombohedral
Lattice Constant
a=12.96Å,b=10.56Å,c=6.49Å
Density
3.6g/cm3
Melting Point
～1000℃
Ferroelectric Transition Temperature～810℃
Mohs Hardness
～5
Thermal Coefficient of Expansion（℃）a1=1.01× 10-5,a2=1.37× 10-5,a3=-4.17 ×10-6
HygroscopicityNo
Dielectric Constant13
Colour
Colorless
Ionic Conductivity（Room Temperature，10kHz)10-8 S/cm

Crystal Optical Properties

Transparent Range350-4500nm
Extinction Ratio
>20dB@633nm
Sellmeier Equationnx2=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
Electro-optic Coefficientr33=38.5pm/VY cut
r33=35pm/V X cut
r23=12.5pm/V
r13=10.6pm/V
1064nm Static Half-wave Voltage4x4x20mm: 1600V
6x6x20mm: 2400V
9x9x20mm: 3600V

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