Frankfurt Laser Company mid-IR LEDs and photodiodes suit gas measurement


A lineup of LEDs and photodiodes from Frankfurt Laser Company (Friedrichsdorf, Germany) operate in the mid-IR range from 1.58 to 4.45 µm, making them suitable for measuring gas concentration or the existence of a particular gas type. The LEDs can be used in quasi-CW or pulsed mode operation to obtain high average power output or high peak power output. Parabolic reflectors combined with the LEDs and photodiodes can decrease beam divergence and increase light gathering power, respectively.

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Frankfurt Laser Company is pleased to announce a new line up of LED’s and accompanying Photodiodes to its range. Both LED’S and PD’s operate in the in the Mid Infrared range from 1.58 µm to 4.45 µm.

Due to advances in measuring technology these LED’s are ideally suited for use in gas measurement; this can be measuring the concentration of a particular gas or the existence of a particular gas type within air. Such sensors offer a reliable, instant and non-contact method of gas detection. The individual LED’s and Photodiodes are a cost effective and are small enough to be integrated into the smallest of packages.
Operating over a wide temperature range allows them to be used in a variety of environments.

LED’s can be either used in Quasi CW or pulsed mode operation to obtain either a high average power output or a high peak power output.

As an addition to the package options, which are TO18 and TO5 can both LED’s and PD’s can be equipped with a parabolic reflector to either decrease beam divergence or increase the light gathering power respectively.

With a complete set of drive electronics available this allows an easy set-up solution to enable quick and easy experimentation.


  • Medical diagnostics
  • Ecological monitoring
  • CO2 Sensors
  • Methane Sensors
  • Water Vapour Sensors


Posted by Lee Mather

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