Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Baruch Fischer"'
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Bose–Einstein condensates were demonstrated at low temperatures, mostly with ultracold bosonic atoms. Here, the authors demonstrate BEC of photons in a standard 1D erbium–ytterbium co-doped fiber cavity at, below and above room temperature.
Externí odkaz:
https://doaj.org/article/c9321cadc5a74eecbe56bbb081d2c994
Publikováno v:
Optics express. 29(17)
We demonstrate photon Bose-Einstein condensation (photon-BEC) at a broad temperature range that is valid also in the long 1D fiber cavity limit. It is done with an erbium-ytterbium co-doped fiber (EYDF) cavity by overcoming the challenging requiremen
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Nature Communications
Nature Communications
Bose–Einstein condensation (BEC) is a special many-boson phenomenon that was observed in atomic particles at ultra-low temperatures. Later, BEC was also shown for non-atomic bosons, such as photons. Those experiments were usually done in micron-siz
Publikováno v:
Optics Communications. 431:151-157
We study wavelength selectable and switchable lasers with two kinds of fiber Bragg grating (FBG) reflectors, based on high harmonic mode-locking frequency addressing near 10 GHz and 25 GHz. We used fiber lasers and also show results with a cavity ext
Publikováno v:
Optics Express. 28:18135
We demonstrate a nonlinear light mode dispersion and a nonuniform frequency mode comb by a chirped fiber Bragg gratings (CFBG) Fabry-Perot (FP) at the 1550 nm wavelength regime. We give analytical expressions for the general chirp case, and an experi
Publikováno v:
2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR).
Contrary to what is commonly accepted in lasers, we show that photons in standard erbium-doped fibers (edf) and lasers can be in thermal equilibrium and show lasing without an overall population inversion. The thermalization with Bose-Einstein spectr
We demonstrate thermalization and Bose-Einstein (BE) distribution of photons in standard erbium-doped fibers (edf) in a broad spectral range up to ~200nm at the 1550nm wavelength regime. Our measurements were done at a room temperature ~300K and 77K.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa36ab0abbb18e9e8555c745b32db402
Publikováno v:
Optics Communications. 283:3953-3956
We propose and experimentally demonstrate a method for fiber dispersion measurement based on the modulation of laser pulses stretched by the fiber under test. The measured spectrum of the modulated pulses is the result of the interference between the
Publikováno v:
Optics Express. 25:32451
We show and identify the role of the backward amplified spontaneous emission (ASE) in inducing bistability and hysteresis in a unidirectional ring erbium-doped fiber (edf) laser. It results from the interplay between the signal and the backward ASE i
Autor:
Naum K. Berger, Baruch Fischer
Publikováno v:
Optics Communications. 274:50-58
We propose and numerically demonstrate a simple method for measuring waveforms of optical pulses that have spectral bandwidths much larger than the passband of the measuring system, thus enabling a kind of temporal superresolution. The technique is b