Zobrazeno 1 - 10
of 13
pro vyhledávání: '"77"'
Autor:
B. Ziętek, Piotr Targowski
Publikováno v:
SPIE Proceedings.
Delayed luminescence spectra of ethanolic solution of RhilO Rh19 Rh6G TmRh RhB and Rh3B at 77 K were investigated. Obtained results indicated that photoionization of the dye molecules being in their triplet states and then recombination of the pair i
Publikováno v:
SPIE Proceedings.
Terahertz Bloch oscillator based on GaAs-GaAlAs superlattice with weak barriers is proposed. Here due to interminiband tunneling current is a rising function of electric field while the tunneling and the Bloch oscillations produce dynamic negative di
Publikováno v:
Optical Interconnects XX.
Silicon (Si) photonics is well-positioned to provide high-speed and low-cost optical interconnects. The extraction of data from cryogenically cooled integrated circuits (ICs) has become of great interest for low-power data readout. Utilizing waveleng
Autor:
Dennis G. Deppe
Publikováno v:
Optical Interconnects XX.
Oxide-free VCSELs can be reduced in cavity dimension to micron size apertures, enabling ultalow bit energy operation based on directly modulated laser operation. The oxide-free VCSEL can be used at room temperature, high temperature or cryogenic temp
Autor:
James Kolodzey, Jay Gupta
Publikováno v:
SPIE Proceedings.
Terahertz emitters are important for fundamental studies in an interesting frequency regime and for applications ranging from medical diagnostics to see-through imaging. A simple approach to THz emission from semiconductors is based on intracenter op
Publikováno v:
SPIE Proceedings.
MWIR photon detector in the mid-infrared wavelength (2-5 μm) range is developed using crystalline silicon carbide substrates. SiC, which is a wideband gap semiconductor, is laser-doped to create a dopant energy level corresponding to a quantum of en
Autor:
Vyacheslav N. Shlyaptsev, Brady Benware, Juan Jose Gonzalez, Juan L. A. Chilla, Cesar H. Moreno, Mario C. Marconi, M. Frati, C. Maccheitto, Jorge J. Rocca, Fernando Gustavo Tomasel
Publikováno v:
SPIE Proceedings.
We review the progress in the development of ultrashort- wavelength lasers based on discharge excitation. The observation of large soft x-ray amplification in Ne-like Ar at 46.9 nm in a capillary discharge created plasma [Phys. Rev. Lett. 77, 1476, (
Publikováno v:
SPIE Proceedings.
This paper presents the results of study of the radiation stability of LiB3O5 (LBO) crystals with regardto optical properties. LBO crystals of the high optical quality were studied under action of an electron beamwith energy of 0.2—10 MeV, X-rays,
Publikováno v:
SPIE Proceedings.
Rare-earth materials doped into low-loss silica fibers are of interest for temperature sensing applications since the absorption properties of such are temperature dependant. Such absorption properties have been studied in ytterbium doped silica fibe
Autor:
Manfred Helbig, Sergey N. Ushakov, Alexander A. Sobol, Alexander Ya. Karasik, Tasoltan T. Basiev, Yu. K. Voron'ko, N A Es'kov, Vladimir V. Fedorov, Vyacheslav V Osiko
Publikováno v:
SPIE Proceedings.
Results of spectroscopic and radiation investigations of disordered calcium-niobium-gallium garnets (CNGG) with wide inhomogeneously broadened lines in absorption and luminescence of Nd3+ are presented. A method of a selective and frequency tuned las