Results 101 to 110 of about 14,234 (351)
Pure frequency oscillations of semiconductor lasers with filtered optical feedback
, 2005 A semiconductor laser subject to delayed filtered optical feedback can show pure frequency oscillations with a period of the order to the delay time, while the power remains practically constant.
B. Krauskopf +9 more
core
Continuous wave and modelocked femtosecond novel bulk glass lasers operating around 2000 nm
, 2011 This thesis reports on the development of glass-based femtosecond laser sources around 2 µm wavelength. In order to be able to produce 2 µm radiation the dopants used were trivalent Thulium (Tm³⁺) and trivalent Holmium (Ho³⁺) that could be optically ...
Fusari, Flavio
core +1 more source
All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security
Advanced Materials, EarlyView.An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak +4 more
wiley +1 more source
Mode structure of a semiconductor laser with feedback from two external filters
, 2008 We study a semiconductor laser subject to filtered optical feedback from two separate filters. This work is motivated by an application where two fiber gratings are used to stabilize the output of a laser source.
Slowinski, P. +4 more
core
Fast tuneable InGaAsP DBR laser using quantum-confined stark-effect-induced refractive index change [PDF]
, 2007 We report a monolithically integrated InGaAsP DBR ridge waveguide laser that uses the quantum-confined Stark effect (QCSE) to achieve fast tuning response.
Renaud, C C +8 more
core +1 more source
Advanced Materials, EarlyView.Solvent‐mediated reactivity control of Lewis‐paired dopants enables highly efficient, finely tunable, and stable doping of organic semiconductors. The optimally doped semiconductor films exhibit superior thermoelectric performance and doping stability, feature delocalized polarons along structurally ordered polymer backbones, and outperform ...
Sang Beom Kim +5 more
wiley +1 more source
Role of magnesium in ZnS structure: Experimental and theoretical investigation
AIP Advances, 2016 Wide band gap semiconductor materials are extending significant applications in electronics and optoelectronics industry. They are showing continued advancement in ultraviolet to infrared LEDs and laser diodes.
M. Y. Shahid +4 more
doaj +1 more source
Critical study of the vertical-cavity surface emitting laser electrical access for integrated optical sub-assembly [PDF]
, 2009 The proposal contribution aims at highlighting the consequence of the impedance mismatching in Vertical-Cavity Surface-Emitting laser (VCSEL)-based optical subassembly for optical interconnection applications.
Jean-Claude Mollier +3 more
core +1 more source
Advanced Materials, EarlyView.The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley +1 more source
Bifurcations of composite-cavity modes in multi-stripe laser arrays
, 2008 We consider a semiconductor laser device, where the active region consists of parallel stripes in the longitudinal direction. In the composite cavity model, the stripes are coupled via the transversal modes of the entire compound laser device.
Wieczorek, Sebastian +2 more
core