Chiron Pockels Cells
Designed for high power and high repetition frequencies of up to 1 MHz at a low operating voltage. The Chiron Pockels cells operate in the 200–1650 nm wavelength range with active apertures of up to 7 mm.
Full Product Description- Optical material:
- BBO
- Wavelength:
- 200–1650 nm
- Contrast Ratio:
- >1000:1
- Active Aperture:
- 2.6–7.0 mm
- Repetition Rate:
- 1 MHz
Product description
Offering a voltage contrast ratio that is greater than 1000:1 at 1064 nm. Utilizing a dual crystal geometry, Chiron Pockels Cells have a low driving voltage (~2.3 kV quarter-wave voltage at 1064 nm for the Chiron 3).
The Chiron series is ideal for high average power systems due to low absorption that results in reduced thermal lensing and reduced depolarization. Low absorption is achieved with superior crystal quality and we accomplish this by utilizing proprietary techniques for crystal growing, fabrication, and polishing techniques to provide reliable, high-performing Pockels cells.
Chiron Pockels cells work in regenerative amplifiers, high pulse repetition rate micro-machining lasers, and high-average power lasers for material processing and metal annealing, as well as any other high power laser application.
Key features
- High pulse rate operation to 1 MHz
- Solid-state – no index matching fluid
- Low acoustic noise
- Damage resistant ceramic apertures
- Compact design
- High-reliability
- Operation at high average power
Specifications
| Name | Value |
|---|---|
| Optical material | BBO |
| Wavelength | 200–1650 nm |
| Contrast Ratio | >1000:1 |
| Active Aperture | 2.6–7.0 mm |
| Repetition Rate | 1 MHz |
| Single pass insertion loss | < 1.5% @ 1064 nm |
| Voltage contrast ratio (VCR) | > 1000:1 @ 1064 nm (parallel polarizers) |
| Single pass wavefront distortion | < λ /6 @ 1064 nm |
| LIDT | 10 J / cm² (10 Hz @1064 nm, 10 ns, ~1 mm diameter) ¹ |
| Capacitance (DC) | ~4 pF |
| Temperature range exposure to simulate storage and shipping conditions | -25°C to 50°C ² |
| Rise time | 10-90% (theoretical) into 50 Ω line: ~ 1 ns |
| Duty cycle | < 5% in 1 s (applied voltage time/total time) |
| DC quarter wave voltage | 1.9–4.7 kV |
| Typical specifications for standard cell | Chiron 2.6 | Chiron 3 | Chiron 4 | Chiron 5 | Chiron 7 |
|---|---|---|---|---|---|
| PHYSICAL | |||||
| Hard aperture diameters | 2.6 mm | 3.25 mm | 4 mm | 5.5 mm | 7 mm |
| ELECTRICAL | |||||
| DC quarter wave voltage (±6%) @ 1064 nm | 1.9 kV | 2.3 kV | 2.9 kV | 3.8 kV | 4.7 kV |
¹ Recommended operation at 1/2 this fluence level for increased longevity. LIDT will vary with wavelength and beam parameters.
² May require 48 hours, or more, to equilibrate following exposure to temperature extremes for contrast ratio values to recover.
