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Description

The PE3B-SI-D0 is a high-performance photodiode detector designed for laser energy measurement up to 24 pJ. With its impressive measurement capabilities and damage thresholds, this laser photodetector is an essential tool for precision laser energy measurement applications.

A SiUV absorber features a specially treated surface window (often using an inversion layer or ultra-thin passivation layers) that allows it to capture deep UV light without losing efficiency. This extends its useful spectral range down to 210 nm.

PE3B-SI-D0 Photodiode Detector

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Specifications

Max Measurable Energy: 2.4E-8 mJ
Max Repetition Rate: 1000 Hz
Effective Aperture: 3 mm
Spectral Range: 0.21 – 1.08 um
Typical Rise Time: 15 µs
Typical Energy Sensitivity: 100 GV/J
Maximum Measurable Energy: 24 pJ
Noise Equivalent Energy: 8 fJ
Maximum Pulse Width: 10 μs
Energy Calibration Uncertainty: ±4 %
Maximum Power: 66 nW
Absorber: SiUV
Dimensions: 38.1Ø x 27.4D mm 
Weight: 0.09 kg
Distance To Sensor Face: 13.7 mm

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Features

  • Spectral Range: 210 - 1080 nm
  • Typical Rise Time: 15 µs
  • Maximum Repetition Frequency: 1000 Hz
  • Typical Energy Sensitivity: 100 GV/J
  • Maximum Measurable Energy: 24 pJ
  • Noise Equivalent Energy: 8 fJ
  • Maximum Pulse Width: 10 μs
  • Energy Calibration Uncertainty: ±4% (634 nm)

Applications

  • Precise laser energy measurement
  • Laser research and development
  • Laser system characterization
  • Optical power monitoring
  • Quality control in laser manufacturing

Frequently Asked Questions

What is the Gentec‑EO PE3B‑Si‑D0 photodiode detector used for?
The Gentec‑EO PE3B‑Si‑D0 is a low‑noise photodiode detector designed for ultra‑low laser pulse energy measurements up to 24 pJ. It is typically used in R&D labs and OEM setups for characterizing very weak pulsed lasers, alignment beams, and diagnostic signals in the 210–1080 nm spectral range. Compared with standard power meters or thermopiles, it offers much higher sensitivity and faster response for picojoule‑level pulse energy measurement.
What are the key specifications of the PE3B‑Si‑D0 for laser energy measurement?
The PE3B‑Si‑D0 has a spectral range of 210–1080 nm with a SiUV absorber and 3 mm aperture. Typical energy sensitivity is 100 GV/J, with a noise equivalent energy as low as 8 fJ when used with Gentec‑EO monitors such as M‑LINK, MAESTRO, or S‑LINK. It measures pulse energies up to 24 pJ at 634 nm, supports pulse widths up to 10 µs, a maximum repetition rate of 1000 Hz, and a maximum average power of 66 nW. Its calibration is NIST‑traceable at 634 nm with ±4% energy calibration uncertainty.
Which monitors and accessories are compatible with the PE3B‑Si‑D0 detector?
The PE3B‑Si‑D0 is designed to be used with Gentec‑EO smart monitors, including M‑LINK, MAESTRO, and S‑LINK. The detector head contains a smart interface with built‑in EEPROM that stores all calibration data, so it is automatically recognized and configured by these monitors. For mechanical mounting and alignment, it is compatible with the STAND‑D‑233 stand, and it can also be integrated on standard optical posts and rails commonly used in optical labs.
How does the PE3B‑Si‑D0 compare to other Gentec‑EO PE‑series photodiode detectors?
Within the Gentec‑EO PE‑B‑Si family, the PE3B‑Si‑D0 uses a 3 mm silicon sensor optimized for 0.21–1.08 µm and ultra‑low noise (8 fJ nominal). Other models in the series include 10 mm Si versions for larger beams, as well as PE5B‑Ge (5 mm germanium, 0.8–1.65 µm) and PE3B‑In (3 mm InGaAs, 0.9–1.7 µm) for infrared wavelengths. Compared with larger‑aperture or Ge/InGaAs heads found on FindLight and similar marketplaces, the PE3B‑Si‑D0 prioritizes extreme sensitivity, low noise, and compact size over high energy or power handling.
What laser types and wavelengths are suitable for the PE3B‑Si‑D0?
The PE3B‑Si‑D0 works with pulsed lasers and low‑power beams between 210 and 1080 nm, such as UV, violet, blue, green, and near‑IR diode or solid‑state lasers (e.g., 266 nm, 355 nm, 405 nm, 532 nm, 633/635 nm, 780–808 nm, 980 nm). It is intended for very low pulse energies (fJ to tens of pJ) and up to 66 nW average power. For higher energies, higher powers, or longer IR wavelengths (up to 1.7 µm), Gentec‑EO recommends using other detectors like PE5B‑Ge or PE3B‑In, or thermopile/pyroelectric heads, depending on the application.
How is the PE3B‑Si‑D0 calibrated and what is the measurement accuracy?
The PE3B‑Si‑D0 is factory‑calibrated by Gentec‑EO and is NIST‑traceable at its calibration wavelength of 634 nm. The typical energy calibration uncertainty is ±4% at that wavelength. Calibration data for the full 210–1080 nm spectral range is stored in the detector’s internal smart interface and is automatically read by Gentec‑EO monitors. Actual measurement noise and accuracy depend on environmental EMI, the laser wavelength, beam size relative to the 3 mm aperture, and how close you operate to the minimum detectable energy and maximum specified power.
What are the physical dimensions and mounting options of the PE3B‑Si‑D0?
The PE3B‑Si‑D0 detector head has an aperture diameter of 3 mm and overall dimensions of approximately 38.1 mm in diameter by 27.4 mm in depth, with a distance of about 13.7 mm from the front housing to the sensor face. It weighs around 0.09 kg. It can be mounted on the Gentec‑EO STAND‑D‑233 stand or on standard optical mounts and posts using appropriate adapters, enabling easy integration into optical tables and beam diagnostic setups.

Got more questions? Use the inquiry form to ask the supplier directly.

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