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Tunable Mirrorless Lasing in Cholesteric Liquid Crystalline Elastomers
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2001
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Materials ScienceLaser ModulationPhotonicsEngineeringLaser SciencePhysicsLaser EmissionOptical PropertiesMechanical EngineeringApplied PhysicsLaser PhysicsLaser ApplicationsOptomechanical SystemLiquid Crystalline ElastomerTunable LasersTunable Mirrorless LasingStretched FormMechanical Deformation
Tuning the wavelength of a laser emission by mechanical deformation is not as implausible as it may seem. This communication proves that it can be done with cholesteric liquid crystal elastomers. The Figure shows what happens when a beam is focussed on the sample in its relaxed (left) and its stretched form (right).