Non-diffractive two-dimensional optical lattice period adjustment system based on zoom lens
A zoom lens and period adjustment technology, applied in optics, optical components, instruments, etc., can solve the problems of difficulty in realizing continuous adjustment of two-dimensional optical lattice period, low efficiency, etc., and achieve a simple structure, improve adjustment efficiency, and easy installation. Effect
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[0019] The period adjustment system with zoom lens can realize the rapid and continuous adjustment of the period of the non-diffraction two-dimensional optical lattice. The pattern will not appear to diverge or shrink. Although a non-diffracting beam is not parallel light, it has similar properties to parallel light in certain circumstances. For example, the commonly used parallel light beam expander system (a lens group composed of two lenses with unequal focal lengths) can produce a beam expansion effect on parallel light, and the present invention has found that it can also realize the overall enlargement of the non-diffraction two-dimensional optical lattice and also complete the pairing. Tuning of the period of a diffraction-free two-dimensional optical lattice. The period of a non-diffractive two-dimensional optical lattice is determined by the wave vector direction of its interference plane wave. The parallel beam expander system can adjust the wave vector direction of...
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