Self-phase modulation and optical limiting of a low-power CO2 laser with a nematic liquid-crystal film

Khoo, I. C.; Michael, R. R.; Finn, G. M.
June 1988
Applied Physics Letters;6/20/1988, Vol. 52 Issue 25, p2108
Academic Journal
The extraordinarily large thermal refractive index gradient of a nematic liquid crystal is employed for transverse self-phase modulation of a cw CO2 laser. The observed optical intensity limiting and switching are in good agreement with theoretical expectations and provide useful guidelines for infrared-beam-limiting applications.


Related Articles

  • Anomalous liquid crystal undershoot effect resulting in a nematic liquid crystal-based spatial.... Sayyah, Keyvan; Chiung-Sheng Wu // Applied Physics Letters;8/24/1992, Vol. 61 Issue 8, p883 

    Presents a single crystal silicon-based spatial light modulator demonstrating a millisecond response using a nematic liquid crystal. Operation of the crystal in the surface mode configuration; Effect of the combination of liquid crystal voltage undershoot and the transient nematic effect;...

  • Dual frequency cholesteric light shutters. Ming Xu; Deng-Ke Yang // Applied Physics Letters;2/10/1997, Vol. 70 Issue 6, p720 

    Examines the dual frequency cholesteric light modulators using the cholesteric liquid crystal. Comparison between the transparent and nontransparent state of light shutters; Effects of frequency voltage on transparent homeotropic and reflecting planar textures; Types of liquid crystal light...

  • Controlling spontaneous generation of optical beam spots in a liquid crystal device. Iino, Yoshiki; Davis, Peter // Journal of Applied Physics;6/15/2000, Vol. 87 Issue 12, p8251 

    Presents information on an analysis made of spot patterns generated in a liquid crystal spatial light modulator with optical feedback from the point of view of controlling generation of spots. Model used; Controlling spots; Conclusion.

  • Resolution of optically addressed liquid-crystal spatial light modulators. Nazvanov, V. F.; Kovalenko, D. I. // Technical Physics Letters;Jul98, Vol. 24 Issue 7, p520 

    Results are presented of calculations of the modulation transfer function of optically addressed, liquid-crystal, spatial light modulators based on layered photoconductor-liquid crystal structures, including surface-plasmon light modulators. Allowance is made for diffusive spreading of carriers...

  • Four million pixels sharpen color display. Bains, Sunny // Laser Focus World;Dec97, Vol. 33 Issue 12, p18 

    Reports on the development of experimental liquid-crystal-on-silicon spatial light modulators by researchers at International Business Machines' T.J. Watson Research Center in Yorktown Heights, New York. Pixel ranges of the modulators; Use of three arrays to build a 28-inch diagonal color...

  • Liquid--crystal film eclipses the sun artificially. Tabiryan, Nelson; Nersisyan, Sarik // Laser Focus World;May2002, Vol. 38 Issue 5, p105 

    Discusses the potential of liquid-crystal (LC) spatial light modulators (SLM) for optical applications. Details of spatial light modulation; Characteristics of LC-SLM; Information on a device, called Eclipsor, that blocks the sunlight in an optical system.

  • Real-time hologram construction and reconstruction using a high-resolution spatial light modulator. Fukushima, Seiji; Kurokawa, Takashi; Ohno, Masayoshi // Applied Physics Letters;2/25/1991, Vol. 58 Issue 8, p787 

    Demonstrates real-time construction and reconstruction of Fresnel holograms using an optically-addressable ferroelectric liquid-crystal spatial light modulator. Resolution of up to 175 line pairs per millimeter; Bright holographic image; Optical separation between the write and read sides by a...

  • High-speed analog spatial light modulator using a hydrogenated amorphous silicon photosensor and an electroclinic liquid crystal. Abdulhalim, I.; Moddel, G.; Johnson, K. M. // Applied Physics Letters;10/16/1989, Vol. 55 Issue 16, p1603 

    A high-speed optically addressed spatial light modulator is described which uses the electroclinic effect in chiral smectic A liquid crystals with a p-i-n photodiode of hydrogenated amorphous silicon (a-Si:H). The near microsecond response time is a function of the liquid-crystal mixture and...

  • Feedback-controlled optimization of amplified femtosecond laser pulses. Brixner, T.; Strehle, M.; Gerber, G. // Applied Physics B: Lasers & Optics;1999, Vol. 68 Issue 2, p281 

    Abstract. We report on automated pulse compression of regeneratively amplified femtosecond laser pulses. By employing a feedback-controlled evolutionary algorithm in combination with a femtosecond pulse shaper which is based on a liquid crystal display spatial light modulator, complex...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics