Zobrazeno 1 - 10
of 22
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
Autor:
Christopher G. Poulton, Caitlin Fisher, C. Martijn de Sterke, Ross C. McPhedran, Lindsay C. Botten
Publikováno v:
SPIE Proceedings.
Butt-coupling of light into a surface plasmon is a simple and compact coupling method with a range of potential uses in photonic circuitry. Although butt-coupling has been successfully implemented in many coupling configurations, the coupling effecti
Publikováno v:
SPIE Proceedings.
We propose and theoretically demonstrate a method for generating an intense isolated attosecond pulse by a few-cycle strong laser pulse. The numerical simulations show that a broadband supercontinuum spectrum can be obtained by the interference of th
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.
In this paper we report on a high energy, low repetition rate 2-micron-laser, with high conversion efficiency in terms of output energy per pump power. The laser consists of a Ho3+-doped LiYF4 (YLF) crystal cooled to cryogenic temperatures in an unst
Autor:
Patrice Camy, Richard Moncorgé, S. Ricaud, Jean-Louis Doualan, Patrick Georges, Frédéric Druon, Eric Mottay, Alain Pellegrina, Dimitris N. Papadopoulos, A. Courjaud
Publikováno v:
SPIE Proceedings.
Cryogenic cooling is a very interesting and promising apparatus for high power lasers, especially with Yb-doped materials. In fact, it is now well known that operating this type of laser materials at cryogenic temperatures such as 77K (liquid nitroge
Publikováno v:
SPIE Proceedings.
We developed a cryogenically cooled Yb:YAG laser as the pump beam for a pulsed Raman laser based on CVD grown diamond crystals. The Q-switched cryogenic Yb-doped YAG 1030 nm pump laser delivered 340 W at 40 kHz with diffraction-limited beam quality,
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:
Arthur R. McGurn
Publikováno v:
SPIE Proceedings.
The transmission properties of a barrier composed of Kerr nonlinear media contained within a photonic crystal waveguide or within circuits formed of photonic crystal waveguides is studied theoretically. The photonic crystal is a two-dimensional array