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Beamsplitters Ultrafast Optical Applications
Jun 01, 2017

The Beamsplitters has important applications in optical micromanipulation, three-dimensional optical imaging and optical communication because of its helical phase wavefront and near-infinite topological load. Compared with the single-channel Beamsplitters generator, the multi-channel Beamsplitters generator can not only enhance the information security and capacity in the information transmission and storage, capture a large number of particles in the particle capture at once, but also can detect different objects at the same time Of the topography or movement characteristics. Conventional multi-channel Beamsplitters generating devices, such as helical gratings, spatial light modulators (SLMs), etc., have high order diffraction interference, energy dissipation of different channels, and excessive component size And can not be integrated in the micro-nano chip and other issues, so that these devices in the application there is a great limitation. Therefore, the micro-multi-channel vortex light beam splitter with high homogeneity and no high order diffraction has important significance in the field of applied optics.

State Key Laboratory of Microfabrication and Optics, Institute of Optoelectronic Technology uses a subwavelength structure to realize a multi-channel Beamsplitters generator with uniform distribution of light energy between channels and no high order diffraction. By adjusting the amplitude and phase of the light wave into the size and rotation angle of the cell structure, the amplitude and phase control of the beam are realized at the same time. The element thickness is about one tenth of the incident wavelength, the resulting Beamsplitters is not subject to high order diffraction interference, and the light energy distribution between the channels is uniform. The experimental results show that the energy dissipation of the beam lattice is 0.146 for the second - order amplitude and continuous phase - controlled multi - channel generator, which is superior to the pure phase regulation.

Our beam splitter has two forms of cubic and thin, each of which provides a choice of coating options optimized for different bands, where the polarized cubic beam splitter can be used to separate the polarization mode of the incident beam, producing linearly polarized light, extinction ratio Up to 1000: 1. The sheet-like beam splitter is an economical choice and is ideal for ultrafast optical applications, providing a lower group velocity dispersion. In addition, we offer a wide range of Polka point beam mirrors with a porous aluminum film and a silicon oxide protective layer to achieve 50/50 resolution in a 250-2500 nm wide spectrum.

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