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Robust design of Si/Si3N4 high contrast grating mirror for mid-infrared VCSEL application
High contrast grating mirror mid-infrared VCSEL Robust design
2012/5/28
A Si/Si3N4 high contrast grating mirror has been designed for a VCSEL integration in mid-infrared ({\lambda} = 2.65 $\mu$m). The use of an optimization algorithm which maximizes a VCSEL mirror quality...
A stress-induced curved polysilicon actuator with a grating is achieved for the application of recordable optical pickups, which have been realized on a single silicon chip using a two-layer poly-sili...
Mechanically Compliant Grating Reflectors for Optomechanics
Mechanically Compliant Grating Reflectors Optomechanics
2011/8/4
Abstract: We demonstrate micromechanical reflectors with a reflectivity as large as 99.4% and a mechanical quality factor Q as large as 7.8*10^5 for optomechanical applications. The reflectors are sil...
Effect of a plasma grating on pump-probe experiments near the ionization threshold in gases
plasma pump-probe experiments ionization threshold gases
2011/8/4
Abstract: Calculations are performed of the phase shift caused by the spatial modulation in the plasma density due to interference between a strong pump pulse and a weak probe pulse. It is suggested t...
Duality violation from a grating
Duality violation grating Diffraction orders phenomenon continuous wave
2011/8/16
Abstract: Diffraction orders in the continuous wave regime generated by a Ronchi transmission grating in a standard threshold configuration are shown theoretically to violate quantum duality for a loc...
Photosensitivity at 1550 nm and Bragg grating inscription in As2Se3 microwires
Chalcogenide Arsenic triselenide As2Se3 Photosensitivity Microwires Bragg gratings
2011/8/29
We report the first experimental observation of photosensitivity in As2Se3 glass at a wavelength of 1550 nm. We utilize this photosensitivity to induce the first Bragg gratings using a laser source at...
Fraunhofer diffraction of a Laguerre-Gaussian laser beam by fork-shaped grating
Fraunhofer diffraction Laguerre-Gaussian laser beam fork-shaped grating
2010/11/17
In this article we present a theoretical study for Fraunhofer diffraction of a Laguerre-Gaussian laser beam with zeroth radial mode number and azimuthal mode number l by diffractive grating with embe...
Engineering Biphoton Wave Packets with an Electromagnetically Induced Grating
Engineering Biphoton Wave Packets Electromagnetically Induced Grating
2010/11/5
We propose to shape biphoton wave packets with an electromagnetically induced grating in a four-level double-$\Lambda$ cold atomic system. We show that the induced hybrid grating plays an essential ro...
Casimir-Polder interaction between an atom and a dielectric grating
Casimir-Polder interaction atom dielectric grating
2010/10/29
We develop the scattering approach to calculate the exact dispersive Casimir-Polder potential between a ground-state atom and a rectangular grating. Our formalism allows, in principle, for arbitrary v...