Super resolution hybrid analog-digital optical beam profiler using digital micromirror device

Demonstrated for the first time is a hybrid analog-digital laser beam profiler based on analog fine motion of a digital micromirror device (DMD) and within-chip digital micromirror controls. The profiler can operate with high-power watt-level laser beams, providing both submicron-level high resoluti...

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Bibliographic Details
Published in:IEEE photonics technology letters 2005-07, Vol.17 (7), p.1492-1494
Main Authors: Riza, N.A., Ghauri, F.N.
Format: Article
Language:English
Subjects:
Beams (radiation)
Biomedical optical imaging
Devices
Digital
Digital micromirror device (DMD)
Fiber lasers
Gaussian beams (optics)
Laser applications
Laser beams
laser measurement applications
laser measurements
Laser modes
Micromirrors
Motion control
Optical beams
Optical crosstalk
Photodetectors
Photonics
Profilers
Profiling
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Summary:Demonstrated for the first time is a hybrid analog-digital laser beam profiler based on analog fine motion of a digital micromirror device (DMD) and within-chip digital micromirror controls. The profiler can operate with high-power watt-level laser beams, providing both submicron-level high resolution and wide area profiling coverage. The demonstrated profiler tested over a 600-μm zone using a 1550-nm Gaussian beam shows a 2-μm profiling edge movement resolution limited by the analog motion mechanics.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.849247