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VOLUME 42 (1985) | ISSUE 9 | PAGE 353
Optical hysteresis in liquid crystals with helicoidal distributed feedback
An optical hysteresis has been achieved for the first time in an impurity cholesteric liquid crystal with a helicoidal distributed feedback at comparatively low light intensities (the power of the laser pump is on the order of a few kilowatts) with a short time constant (the pulse length is r^8 ns).