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TX series pockels cells product image

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
300–1300 nm
Contrast Ratio:
Active Aperture:
19.5–99.0 mm
Repetition Rate:
1 kHz
Single pass distortion:
λ / 20
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Product description

These Pockels cells offer a voltage contrast ratio that is greater than 8000:1 at 1064 nm. Featuring axially adjustable windows for sub-millimeter control of window/crystal spacing and 224 TPI differential screws for arc-second adjustment of windows parallelism or net wedge.

The TX 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.

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
  • Individually accessible crystal faces for convenient inspection or cleaning
  • 50 Ω transmission line drive configuration is standard.
  • Precision-milled and epoxy-free
  • A range of apertures available


Wavelength300–1300 nm
Contrast Ratio>8000:1
Active Aperture19.5–99.0 mm
Repetition Rate1 kHz
Crystal deuteration95% ²
Single pass distortionλ / 20
Electrical source and termination50 Ω

Typical SpecificationsTX2042TX2650TX3460TX5065TX7595TX100D
L x H x W (mm) ¹85x80x8597x87x92102x95x103115x111x119151x136x144157x 161x169
Hard aperture19.5 mm25.5 mm 33.5 mm49.5 mm73.5 mm99.0 mm
Weight1.1 kg 1.4 kg 1.9 kg 2.7 kg5.4 kg7.5 kg
OPTICAL (1064 nm)
Single pass insertion loss3.5% 4%5%5%6.5%7%
Voltage contrast ratio crossed polarizers8000:18000:16000:13000:1800:1200:1
Voltage contrast ratio parallel polarizers 3000:12500:11500:1 500:1300:1100:1
Maximum residual birefringence<10 nm<12 nm<18 nm<20 nm<40 nm<80 nm
DC halfway voltage6.4 kV6.4 kV6.7 kV6.9 kV7.3 kV7.7 kV
Capacitance @ 1 kHz 23 pF27 pF32 pF56 pF86 pF115 pF
10-90% risetime1 nsec<2 nsec2 nsec 3 nsec 5 nsec7 nsec

¹ L=housing length along optic axis direction; W=width between electrical terminals; H=height

² 99% deuterated KD*P and UV-grade KDP also available in certain sizes. Please inquire.