TX Pockels cells
The largest Pockels cell in our repertoire, the TX series has an active aperture up to 99 mm and operates in the 300–1300 nm wavelength range at repetition rates up to 1 kHz.
Full Product Description- Optical material:
- KD*P
- Material purity:
- 95%¹
- Wavelength:
- 300–1300 nm
- Contrast Ratio:
- >8000:1
- Active Aperture:
- 19.5–99.0 mm
- Repetition Rate:
- 1 kHz
- Single Pass Distortion:
- < λ/20
Product description
The TX Pockels cell series represents the most advanced large aperture optical isolators commercially available and incorporates state-of-the-art features, such as specially modified cylindrical-ring electrode geometries for optimum aperture extinction and transmission uniformity and minimum optical path length. It is the only Pockels cell series to feature axially adjustable windows to control spacing between the windows and the crystal and differential screws for arc-second adjustment of windows parallelism or net wedge.
The TX Pockels cells offer an intrinsic contrast ratio that is greater than 8000:1 at 1064 nm.
Options
99% Deuterated KD*P available in certain sizes
Applications
Q switching and optical isolators in petawatt/terawatt lasers for applications such as nuclear fusion and microlithography
Key features
- Axially adjustable windows for sub-millimeter control of window/crystal spacing
- 224 TPI differential screws for arc-second adjustment of input/output windows parallelism
- Double fill/drain ports for easy fluid draining or refilling
- Individually accessible crystal faces for convenient inspection or cleaning
- 50 Ω transmission line drive configuration is standard
- Precision-milled and epoxy-free for clean assembly
- A range of apertures available
Specifications
| Name | Value |
|---|---|
| Optical material | KD*P |
| Material purity | 95%¹ |
| Wavelength | 300–1300 nm |
| Contrast Ratio | >8000:1 |
| Active Aperture | 19.5–99.0 mm |
| Repetition Rate | 1 kHz |
| Single pass insertion loss | < 3.5 – 7% (@ 1064 nm) |
| Voltage contrast ratio (VCR) | > 2500:1 (@ 1064 nm, parallel polarizers) |
| Single Pass Distortion | < λ/20 |
| Capacitance (DC) | 23-115 pF |
| DC quarter-wave voltage | 3.2-3.9 kV @ 1064 nm |
| LIDT | > 10 J/cm² (1064 nm, 10 ns pulse, 10 Hz, 1 mm diameter) |
NOTE: All Specifications above are "Typical Performance" values.
| Typical specifications | CQX 8 | CQX 9.25 | CQX 12.3 | CQX 15.5 | CQX 25 |
|---|---|---|---|---|---|
| Hard aperture diameter | 8 mm | 9.25 mm | 12.3 mm | 15.5 mm | 25 mm |
| 10-90% rise time (theoretical) into 50 Ω line | 0.8 ns | 0.8 ns | 1.1 ns | 1.1 ns | 1.1 ns |
| Typical Specifications | TX2042 | TX2650 | TX3460 | TX5065 | TX7595 | TX100D |
|---|---|---|---|---|---|---|
| Hard aperture | 19.5 mm | 25.5 mm | 33.5 mm | 49.5 mm | 73.5 mm | 99.0 mm |
| Single pass insertion loss @ 1064 nm | < 3.5% | < 4% | < 5% | < 5% | < 6.5% | < 7% |
| DC quarter wave voltage @ 1064 nm | 3.2 kV | 3.2 kV | 3.4 kV | 3.5 kV | 3.7 kV | 3.9 kV |
| Capacitance @ 1 kHz | 23 pF | 27 pF | 32 pF | 56 pF | 86 pF | 115 pF |
| 10-90% risetime | 1 ns | <2 ns | 2 ns | 3 ns | 5 ns | 7 ns |
¹ 99% deuterated KD*P and UV-grade KDP also available in certain sizes. Please inquire.
