Download or read book Development of Liquid Crystal Spatial Light Modulators for Mid IR Radiation Addressed by Visible Radiation written by and published by . This book was released on 2002 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Development and Application of a Liquid Crystal TV Spatial Light Modulator written by John Charles Aiken and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Development of Liquid Crystal Spatial Light Modulator Based Coherent Optical Correlators written by Mark Lawrence Begbie and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Development of Liquid Crystal Spatial Light Modulator Based Coherent Optical Correlators written by Mark Lawrence Begbie and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Silicon VLSI Optically Addressed Liquid Crystal Smart Spatial Light Modulator written by Vernon Eugene Shrauger and published by . This book was released on 1997 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of a Colour Liquid Crystal Display Spatial Light Modulator and Applications in Polychromatic Optical Processing written by John Charles Aiken and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of a Colour Liquid Crystal Display Spatial Light Modulator and Applications in Polychromatic Optical Data Processing written by John Charles Aiken and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Programmable Liquid Crystal Television Spatial Light Modulator as Applied to Real time Optical Signal Processing written by Jennifer Louise Croissant and published by . This book was released on 1987 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial Light Modulators and Applications written by and published by . This book was released on 1995 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An NMOS Addressed Liquid Crystal Spatial Light Modulator written by Ian Underwood and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Characterization and Enhancement of Liquid crystal Spatial Light Modulators written by Matthew Richard Hart and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Diffraction Efficiency of Optically Addressed Liquid Crystal Spatial Light Modulators for Telescopes with Nonlinear Correction for Distortions written by and published by . This book was released on 1997 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report results from a contract tasking Research Institute for Laser Physics as follows: The contractor will investigate experimental and theoretical studies of the factors limiting the diffraction efficiency of spatial light modulators with nematic liquid crystals that are used for correcting wavefront distortions; fabr and test two spatial light modulators with segnetoelectric smectic liquid crystals; perform experimental and theoretical studies of the factors limiting the diffraction efficiency of spatial light modulators with smectic liquid crystals that are used for correcting wavefront distortions. Design, fabricate and test spatial light modulators from nematic and segnetoelectric liquid crystals with optimized parameters as determined by steps (a through c).
Download or read book Optical Characterization and Enhancement of Liquid crystal Spatial Light Modulators written by Matthew Richard Hart and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High resolution Wavefront Control Using Liquid Crystal Spatial Light Modulators written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid crystal spatial light modulator technology appropriate for high-resolution wavefront control has recently become commercially available. Some of these devices have several hundred thousand controllable degrees of freedom, more than two orders of magnitude greater than the largest conventional deformable mirror. We will present results of experiments to characterize the optical properties of these devices and to utilize them to correct aberrations in an optical system. We will also present application scenarios for these devices in high-power laser systems.
Download or read book Evaluation of a Liquid Crystal Spatial Light Modulator Capable of Amplitude and Phase Modulating Modes written by Tracy D. Hudson and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: An optically-addressed nematic liquid crystal spatial light modulator marketed by Micro-Optics Technologies has been evaluated as an amplitude- and phase-modulating device for optical pattern recognition applications. Experimental results of the device's performance are presented in this report.
Download or read book Fast Multi Spectral Liquid Crystal On Silicon Spatial Light Modulators Preprint written by and published by . This book was released on 2006 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stressed liquid-crystal (SLC) electro-optic effect promises fast electro-optic response times even for design wave-lengths in the infrared (IR). Here we report characteristics of SLC devices appropriate for use as liquid-crystal-on-silicon (LCOS) spatial light modulators (SLMs) in the near-IR band (lambda = 1.8 to 2.5 mum), mid-IR band (3 to 5.5 mum) and far-IR band (8 to 14 mum). For these three bands, we fabricated SLC devices with 5, 10, and 20 mum thicknesses; at drive voltages of 25, 50, and 125 V, respectively, these devices gave half-wave modulation with response speeds in the 1.3 to 1.6 ms range. Visible-light measurements on a 20-mum-thick SLC device between crossed polarizers gave a contrast ratio of 360:1 which improved to nearly 18,000:1 with a Babinet-Soleil compensator offsetting residual SLC retardance. The drive voltages for near-IR and mid-IR devices enable fabrication of SLCOS devices using high-voltage transistors options in standard CMOS processes; improvement of SLC materials by modest increase of birefringence delta n and dielectric anisotropy delta e would further bring far-IR devices within the standard CMOS drive voltage range. High-voltage CMOS transistor design rules permit pixel pitches less than 24 mum, making 1000 x 1000 SLMs feasible.
Download or read book Complex Apmlitude Modulation of Liquid Crystal Spatial Light Modulators written by Kanghua Lu and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
