Fast Acting Optical Beam Deflection System
Abstract
The primary objective of the present investigation is to seek an effective and practical method to detect and suitably deflect a coherent optical radiation from its initial direction of incidence and thus avoid the occurrence of serious biological damages which may be caused by such harmful radiations in the wavelength range of 0.4 - 1 micrometer. In the research proposal a possible effective method of simultaneous detection and deflection method using a blazed diffraction grating has been discussed. A diffraction grating is an optical surface with many straight, parallel and equally spaced grooves which provide an optical diffraction due to the mutual interference of the light beams. The distribution of light into various orders of a grating depends upon the microscopic shape of the grooves of the grating. By ruling the grating with and controlling the angles of the grooves it is possible to concentrate the spectral energy in any desired angular region. This is called BLAZING a grating, and the groove-face angle psi is called the blaze angle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1988
- Accession Number
- ADA203042
Entities
People
- Dilip K. Das-Gupta
Organizations
- Bangor University