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Your search keyword '"Nikolay B. Chichkov"' showing total 3 results
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3 results on '"Nikolay B. Chichkov"'

1. InGaN distributed feed back laser with sidewall gratings emitting at 42X nm

Author

Thomas J. Slight, Amit Yadav, Szymon Grzanka, Kevin E. Docherty, Antony E. Kelly, Scott Watson, Michał Leszczyński, Nikolay B. Chichkov, S. Stanczyk, Edik U. Rafailov, P. Perlin, and S. P. Najda

Subjects
Waveguide lasers, Feed back, Blue laser, Materials science, business.industry, 02 engineering and technology, Grating, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, law.invention, 010309 optics, Full width at half maximum, Wavelength, law, 0103 physical sciences, Optoelectronics, 0210 nano-technology, business
Abstract

We demonstrate a single wavelength operation from an InGaN/GaN distributed feedback (DFB) blue laser at 42X nm. The 39th order grating is etched in the sidewall to achieve single wavelength. The laser has a FWHM of ~ 25 pm at 500mA pulsed current with 15 mW output power.

Published
2018
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2. Wavelength-tunable cascade type-I quantum-well GaSb-based diode laser at 3.2 μm

Author

Evgeny Zherebtsov, Gregory Belenky, Nikolay B. Chichkov, Leon Shterengas, Meng Wang, Amit Yadav, Gela Kipshidze, and Edik U. Rafailov

Subjects
Wavelength, Range (particle radiation), Materials science, business.industry, law, Cascade, Physics::Optics, Optoelectronics, business, Laser, Quantum well, Diode, law.invention
Abstract

We investigate the wavelength-tuning of cascade quantum-well GaSb-based diode lasers emitting at 3.2 µm. An external-cavity setup is used to demonstrate wavelength-tuning over a range of 250 nm with a maximum output power of 8.4 mW.

Published
2018
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3. Fluorescence bandwidth of 280nm from broadband Ce 3+ –doped silica fiber pumped with blue laser diode

Author

Regina Gumenyuk, Mikhail V. Yashkov, Nikolay B. Chichkov, Amit Yadav, Mikhail Melkumov, Evgeny Zherebtsov, Edik U. Rafailov, and E. M. Dianov

Subjects
Blue laser, Materials science, Silica fiber, business.industry, Doping, 02 engineering and technology, Wavelength, 020210 optoelectronics & photonics, Fiber laser, Broadband, 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, Photonics, business, Diode
Abstract

Fluorescence properties of a Ce3+-doped silica fiber at different pump wavelengths between 405nm to 450 nm are investigated. With 405 nm pump wavelength and a fiber length of ∼130-140 cm broadband fluorescence of ∼280nm is achieved.

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