Shock Absorber

MKS Ophir, Light & Measurement

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LOGAN, Utah, Feb. 16, 2011 — Ophir Photonics has unveiled its Shock Absorber, a mounting post designed to allow the operation of sensitive pyroelectric laser power/energy sensors in an environment with vibration. This special mount smoothes out vibration and eliminates false triggering, reducing the sensor's susceptibility to vibration from 2 to 10 times.

Pyroelectric energy sensors measure the heat deposited in repetitive laser pulses, but they are sensitive to acoustic signals as well as thermal and can produce false readings when subjected to vibration or shock. Some laser power/energy sensors include a user-settable minimum energy setting to eliminate false readings caused by noise. But this approach reduces the sensitivity for good signals as well. The Shock Absorber eliminates false signals and leaves intact the sensitivity to good signals, providing more accurate measurement of low energy pulsed lasers that are often operated in noisy environments.

Laser sensor heads are often mounted on vibrating tables, especially in laser systems that have vibrating parts. The vibration can cause false triggering of the sensor. The Shock Absorber mounting post features a screw embedded in rubber that provides a flexible barrier between the post and the sensor head, reducing false triggering.

The mounting post works with all of the company’s energy sensors, including the PE Series pyroelectric detectors that provide a high damage threshold, high pulse energies and a wide spectral range.

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Published: February 2011