Development of Liquid Crystal Spatial Light Modulators for mid-IR Radiation, Addressed by Visible Radiation
Abstract
This report results from a contract tasking Research Institute for Laser Physics as follows: Recent years has shown fast progress in the development of the technique of compensation for distortions in laser and imaging optical systems working in the visible spectral range through the use of dynamic holographic recording in optically-addressed liquid crystal spatial light modulators. However, this has not been extended to the mid-IR due to the lack of photoconductors that are sensitive to radiation in this wavelength range. The goal of this project is to solve this problem with an approach that will result in the photoconductive layer being transparent to the mid-IR radiation, and with the internal mirror that reflects the mid-IR radiation being sufficiently transparent to the visible light that the hologram can be recorded. Several elements of this type will be fabricated, tested and delivered. The spatial light modulator is to provide high diffraction efficiency for the recording of the dynamic grating, and to possibly record the phase gratings with the amplitude of the phase retardation of as much as 2 pi radians in the mid-IR spectral range.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2002
- Accession Number
- ADA410722
Entities
People
- Vladimir Y. Venediktov