Packaged photodetectors based on PIN photodiodes for monitoring Q-switched and mode-locked pulsed lasers.

  • Compact Integrated Package Complete ready-to-use solution in a compact package, including optional bias.
  • Flexible Options Full range of detector materials and sizes, free-space or fiber-coupled, plus wall-plug option.
  • Simple Operation Plug directly into 50 Ω coaxial input of oscilloscope or spectrum analyzer.
Photodetectors Line Drawing

Complete Family of Photodetector Products

Three types of photodetectors to support all your laboratory and OEM needs. <10 GHz photodetectors for general use, >10 GHz devices for high repetition-rate applications, and amplified detectors including a transimpedance amplifier for low-energy pulses. 

Don’t know which is the right product for you? We can help you choose.

<10 GHz Photodetectors

Monitor the pulse energy and/or pulse shape of your laser at speeds up to a few GHz, at wavelengths spanning the visible and near-IR with very low noise equivalent power (NEP). BNC output connector.


Wide Wavelength Coverage - Choice of Si or InGaAs photodiodes.

Optimized Detec or Sizes - Active area diameters from 100 µm to 4.6 mm. 

Integrated Internal Bias - Each photodetector includes a long-life lithium cell.

>10 GHz Photodetectors

For very high-frequency applications include heterodyne signal detection and fast time-domain measurements. SMA output connector.

Ultra-high Frequency Response -Bandwidths as high as >22 GHz.

Input Options - Choice of single- or multi-mode fiber, or free-space inputs.

Broad Wavelength Options - Responsive from 500 nm to >2000 nm.

Amplified Photodetectors 

Integrated transimpedance amplifier combines high gain for low input power < 1 mW together with high bandwidth – up to 10 GHz.

High Conversion Gain - As high as 3.25 V/mW. 

Input Flexibility - Fiber-coupled or free-space, with half-angle acceptance up to 20°.

Compact Design - Small footprint integrates easily into your system. 

Need to make this authored

Ready to

Get Started?

Enter your email address and a specialist will reach out to you.

Required field

  • By providing your email, you agree to the Coherent Terms of Use.
  • Coherent will send you marketing email, you may opt-out at any time by clicking on the unsubscribe link in every marketing email.
  • We do not sell your information, but we may share it with third-party services in accordance with the Coherent Privacy Policy.

Shop Coherent

Online shopping for lasers, optical fibers, power meters and sensors, accessories, and much more on Coherent online has never been easier.