Coherent developed the PowerMax-Pro technology to meet the growing need for a laser power sensor with broad wavelength sensitivity, a large dynamic range and the high damage resistance of a thermopile. They created the PowerMax-Pro to provide a fast response speed, enables them to see pulses from a 50µs duration, approaching that of a semiconductor photodiode.
- Measuring from 100µW to 3kW (average power)
- See pulses from a 50µs duration
Thermopile sensors are used for measuring CW laser power, average power in pulsed lasers, and are often used to integrate the energy of long pulses. These sensors have natural response times of several seconds for a low power sensor and up to one minute for a kilowatt sensor. When combined with a Coherent meter a speed-up algorithm they provide extremely fast response times.
- Measuring from 100µW to 10kW (average power)
- Spectral range: 190nm – 11µm
The photodiodes used in semiconductor/optical sensors offer high sensitivity and low noise, enabling them to detect very low light levels. These photodiodes are also convenient for tuning and peaking lasers due to their fast response time. The spectral range is more limited than our other sensor technologies as they are limited to measuring CW laser power.
- Measuring from 10nW to 30mW (average power)
- Spectral range: 250nm – 1.5µm
These Coherent energy sensors use a pyroelectric element to measure the energy in a laser pulse. Pyroelectric sensors are ideal for measuring the output of pulsed lasers. These devices can be used at repetition rates up to 10 kHz, and are able to measure laser pulses beyond a Joule.
- Measuring from 8pJ to 5J (average energy)
- Spectral range: 190nm – 12µm
- Repetitive rate: up to 10kHz
LaserCam-HR II and LaserCam-HR II UV
The LaserCam-HR II is Coherent’s new generation of digital USB 2.0 bus-powered, high-resolution, large-area cameras. The family includes 1/2-inch and 2/3-inch format CCD cameras with a wide dynamic range and low noise, as well as a UV laser beam profiling system for applications from 190 nm to 355 nm.
The UV model is robust when used with the harsh UV wavelengths that often degrade typical beam diagnostic cameras.
- USB 2.0, 12-bit and 14-bit digital output
- Large-area arrays
- Spectral range: From 190nm to 1100nm
LaserCam-HR-InGaAs beam diagnostic
Coherents high-resolution SWIR laser beam profiling system are designed to be highly accurate in the 900 nm to 1700 nm wavelength range.
This 14-bit, large area, uncooled InGaAs camera provides user programmable integration and incredibly fast capture rates with an optical dynamic range of greater than 1000:1.
- USB 2.0 large area, InGaAs sensor, 9.6 mm x 7.7 mm
- Outstanding linearity error of < 1%
- 30 μm x 30 μm pixel pitch
Combining Coherent’s trusted laser measurement and beam diagnostic products with our in-house expertise developed over 30 years, means we have the technology and design experience to help customers find the right product for their application.
Our team rigorously design and test solutions and then support customers with integration and calibration to make sure we deliver a solution that is uniquely optimised for your application.