Electro-optic Products
Quick Overview
Cristal Laser has developed precise alignment techniques that enable us to offer our customers complete, plug-and-play RTP Pockels cell assemblies with a superior level of performance in electro-optics applications.
Electro-optic RTP (Rubidium Titanyl Phosphate) crystals are mostly used in a birefringence-compensated scheme, thus requiring matched pairs of crystals which offer a range of benefits:
– Non hygroscopic
– High electro-optic constant
– Good extinction ratio
– No piezo or pyro-electric effects
– Can be mounted as RTP Q-switch or RTP pulsepicker
RTP may also be used in a single-crystal configuration for phase-modulation, taking advantage of the high r33 electro-optic coefficient. In this case, the laser emission is polarised along the crystal’s Z-axis and the optical length of the crystal can be precisely adjusted by the voltage applied between the Z-sides.
| Name | Aperture | Length | Flatness | Wavefront distortion | Parallelism | Perpendicularity | Scratch and Dig | Bulk absorption | Damage threshold | |
|---|---|---|---|---|---|---|---|---|---|---|
| RTP Phase Modulator | Up to 15x15mm² | <λ/10 @633nm | <λ/4 @633nm for a 20mm-long crystal | Down to 5” | Down to 5 arc min. | <2/1 | <100 ppm/cm@1064nm | 10J/cm²@1064nm, 10ns 10Hz | ||
| RTP Pockels cell | Up to 15x15mm² | 5, 7, 10 and 12,5mm. Other lengths on request. | <λ/10 @633nm | <λ/8 @633nm for each crystal | Down to 5” | Down to 5 arc min. | <2/1 | <100 ppm/cm@1064nm | ||
| RTP pairs | Up to 15x15mm² | 5, 7, 10 and 12,5mm. Other lengths on request. | <λ/10 @633nm | <λ/8 @633nm for each crystal | Down to 5” | Down to 5 arc min. | <2/1 | <100 ppm/cm@1064nm |