Results 21 to 30 of about 56,935 (169)
A Microlens Array Grating for Miniature Multi-Channel Spectrometers
Sensors, 2023 Most existing multi-channel spectrometers are constructed by physically stacking single-channel spectrometers, resulting in their large size, high weight, and limited number of channels. Therefore, their miniaturization is urgently needed. In this paper,
Shuonan Shan +5 more
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Investigation of diffractive grating creation in glass by using femtosecond laser pulses [PDF]
مجله علوم و فنون هستهای, 2019 In this paper, the interaction of femtosecond laser pulses with BK7 glass is investigated. A Ti:sapphire femtosecond laser with the chirped pulse amplification is used.
R Goodarzi, F Hajiesmaeilbaigi
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Micromachines, 2019 In this paper, we proposed near-infrared spectroscopy based on a Si photodetector equipped with a gold grating and extended the measurable wavelength range to cover 1200−1600 nm by improving a spectrum derivation procedure.
Yu Suido +4 more
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Advances in diffractive liquid crystal grating devices using patterned electrodes
Journal of Information DisplayOptics has advanced through centuries of research into the fundamental properties of light and its interactions with matter. Within this rich history, one optical component stands out: the diffraction grating.
Chan-Hee Han +4 more
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Mode Optimization and Polarization Control in VCSELs with Sub-Wavelength Gratings
IEEE Photonics JournalWe have demonstrated the integration of sub-wavelength gratings (SWG) into a 795 nm vertical cavity surface emitting laser (VCSEL) with inverse surface relief to achieve coordinated control of the mode and polarization. At a grating period of around 0.5 &
Yongli Wang +4 more
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IEEE Photonics Journal, 2022 In the field of optics, bound state in the continuum (BIC) as a special state to be researched in many photonic crystals and periodic structures, which can produce strong resonance and an ultrahigh Q factor.
Yuhang Ruan +4 more
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Fabricating waveguide Bragg gratings (WBGs) in bulk materials using ultrashort laser pulses
Nanophotonics, 2017 Optical waveguide Bragg gratings (WBGs) can be created in transparent materials using femtosecond laser pulses. The technique is conducted without the need for lithography, ion-beam fabrication methods, or clean room facilities.
Ams Martin +3 more
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Miniaturized Optical Encoder with Micro Structured Encoder Disc
Applied Sciences, 2019 A novel optical incremental and absolute encoder based on an optical application-specific integrated circuit (opto-ASIC) and an encoder disc carrying micro manufactured structures is presented.
Jonathan Seybold +6 more
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