High Power Laser Science and Engineering · 2018 · 17 citations · 9 references
EngineeringElectrical EngineeringOpticsOptoelectronicsPhotonicsLaser OpticsLaser PhysicsLiquid CrystalsOptical ModulationOptical ModulatorsPhysical OpticsAccuracyControl ExperimentsPhase ModulationPhase ModulatorsSilicon Photonic ModulatorsSpatial Light Modulators
The paper reports an optically addressed liquid crystal modulator for 1053 nm laser beam wavefront control and proposes a new method to measure the gray‑level to phase‑retardation relationship. The modulator’s working principle, control method, and spatial phase‑modulation capability are introduced, and a new gray‑level to phase‑retardation measurement method is validated through special experiments. The device realizes multiple spatial phase distributions, achieving phase retardation exceeding $2\pi$ at 1053 nm with high control accuracy, and outperforms LCD‑on‑silicon spatial light modulators by producing smooth phase patterns without black‑matrix artifacts.
An optically addressed liquid crystal modulator for wavefront control of 1053 nm laser beam is reported in this paper. Its working principle, control method and spatial phase modulation capability are mainly introduced. A new method of measuring the relationship between gray level and phase retardation is proposed. The rationality of the curve is further confirmed by designing special experiments. According to the curve, several spatial phase distributions have been realized by this home-made device. The results show that, not only the maximum phase retardation is larger than $2\unicode[STIX]{x03C0}$ for 1053 nm wavelength, but also the control accuracy is high. Compared with the liquid crystal on silicon type spatial light modulator, this kind of modulator has the advantages of generating smooth phase distribution and avoiding the black-matrix effect.
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Applications of spatial light modulators in atom optics
David McGloin, Gabriel C. Spalding, H. Melville et al. · Optics Express · 2003 · 162 citations · Full text
Programmable focal spot shaping of amplified femtosecond laser pulses
N. Sanner, Nicolas Huot, E. Audouard et al. · Optics Letters · 2005 · 159 citations
Engineering, Manufacturing Engineering, Microfabrication +13