Paper
21 December 1988 Infrared Nonlinear Optical Power Limiting With A Nematic Liquid Crystal Film
R. R. Michael, G. M. Finn, R. G. Lindquist, I. C. Khoo
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Abstract
We present a detailed theory of thermally induced transverse self-phase modulation and optical limiting with nematic liquid crystal films at CO2 (10.6μm) wavelengths. Our theory accounts for the detailed roles played by the laser parameters (such as intensity, polarization, wavelength, etc.), sample parameters (such as the thermal index gradient, thermal conductivity thickness, etc.) and the geometrical placement of the lens, sample and detector. The experimental results are in good agreement with the theoretical predictions. Our theory and observation enable us to determine optimal configurations and physical parameters for practical application of these processes.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. R. Michael, G. M. Finn, R. G. Lindquist, and I. C. Khoo "Infrared Nonlinear Optical Power Limiting With A Nematic Liquid Crystal Film", Proc. SPIE 0971, Nonlinear Optical Properties of Organic Materials, (21 December 1988); https://doi.org/10.1117/12.948228
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KEYWORDS
Liquid crystals

Optical limiting

Refractive index

Absorption

Phase shifts

Infrared radiation

Modulation

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