Large Angle Nonmechanical Laser Beam Steering at 4.6 micro m Using a Digital Micromirror Device
Abstract
Large angle, nonmechanical beam steering is demonstrated at 4.62 m using the digital light processing technology. A 42-deg steering range is demonstrated, limited by the field-of-view of the recollimating lens. The measured diffraction efficiency is 8.1% on-axis and falls-off with a sin2 dependence with the steering angle. However, within the 42-deg steering range, the power varied less than 25%. The profile of the steered laser beam is Gaussian with a divergence of 5.2 mrad. Multibeam, randomly addressable beam steering, is also demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 27, 2018
- Accession Number
- AD1102342
Entities
People
- Abbie T. Watnik
- James R. Lindle
Organizations
- United States Naval Research Laboratory