Simple Optical Vibration Sensor for Small Objects

Award Information
Agency: Department of Commerce
Branch: N/A
Contract: N/A
Agency Tracking Number: 34530
Amount: $200,000.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1997
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
8513 North 95th Street, Longmont, CO, 80503
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Paul J.M. Suni
 Principal Investigator
 (303) 651-3268
Business Contact
Phone: () -
Research Institution
A very simple and low-cost optical sensor for measuring vibrations of mechanically supported thin films and other small objects will be developed. Such measurements are useful in characterizing elastic materials properties. The sensor is based upon the so-called self-mixing effect in lasers, which enables the assembly of velocimeters containing nothing more than a diode laser, a lens, and a signla processor. The sensor combines high sensitivity and a very low parts count with a PC-based signal processor, to produce an instrument capable of measuring vibrations of specimens as small as tens of micrometers. It can easily be fitted to a microscope for real-time specimen observation during testing. A prototype velocity sensor has been assembled and tested using equipment purchased for less than $500. During Phase I, we propose to extend the demonstrated linear velocity sensing capability to sensing of vibrations of small objects, and to carry out a baseline design of a low-cost signal processor/display prototype. During Phase II, we will finalize the hardware design and develop a complete instrument for thin-film measurement and display. The end result of the proposed work is a highly capable sensor suitable for commercialization.

* Information listed above is at the time of submission. *

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