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Laser Components (UK) Ltd.
Goldlay House,
114 Parkway,
Chelmsford Essex CM2 7PR
United Kingdom
Phone: +44 1245 491 499
E-Mail:info@lasercomponents.co.uk

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Signal Processing Circuits for Position Sensing

Photonics News No 54

UK54-0230

Position Sensing Detectors (PSDs) are becoming more popular thanks to their simple, robust design, and high positional accuracy. To further compliment these detectors we highly recommend using a Signal Processing Circuit (SPC).  

A Signal Processing Circuit is designed to directly interface with a PSD, providing it with the supply voltage and delivering the position measurement data in an easy to handle format.

PSDs generate two photocurrents per axis which travel to two contacts. One can calculate the absolute laser spot position by performing a difference over sum calculation. These photocurrents are very small. To accommodate for this the SPC converts and amplifies these small photocurrents into an easily readable value of ±12 V.

To simplify the use of PSDs in your system we can also mount PSDs as large as 10x10 mm directly onto the SPC, meaning no soldering required!


Further product information:
PSD

Manufacturer:
SiTek Electro Optics AB

Contact:

Contact Person:    Chris Varney
Company:    LASER COMPONENTS (UK) Ltd.
Address:    Goldlay House 114 Parkway
Postcode / City:    CM2 7PR Chelmsford Essex
Phone:    +44 1245 491499
Fax:    +44 1245 491801
Email:    cvarney@lasercomponents.co.uk
 

Position-sensitive detector array

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info@lasercomponents.co.uk

Your contact person

Kay Cable

+44 1245 491499

kcable@lasercomponents.co.uk