Results 31 to 40 of about 5,425 (221)
RF or THz signals generated from DC biased multimode lasers [PDF]
, 2007 Although self pulsating (SP) lasers are DC biased, they feature a modulation of the output power. For the results presented in this paper, the SP frequency corresponds to the frequency spacing between longitudinal modes or its second harmonic.
Landais, Pascal +2 more
core +1 more source
Ultrashort Q-switched pulses from a passively mode-locked distributed Bragg reflector semiconductor laser [PDF]
, 2012 A compact semiconductor mode-locked laser (MLL) is presented that demonstrates strong passive Q-switched mode-locking over a wide range of drive conditions.
Cheung +12 more
core +1 more source
Advanced Photonics Research, 2021 High‐contrast subwavelength grating (HCG) and distributed Bragg reflector (DBR) are demonstrated to be able to tailor the dispersion independently. Herein, it is found that multiple‐shape dispersions can be realized by a metastructure, which consists of ...
Jing Zhang, Anjin Liu
doaj +1 more source
A wavelength-tunable short-cavity DBR laser with active distributed Bragg reflector
IEICE Electronics Express, 2005 The incorporation of an active single-quantum well in the tuning layer of a DBR laser is proposed as a way of compensating for optical loss and achieving stable single-mode operation during wavelength tuning. Experimental results demonstrate that the structure achieves these goals while maintaining the efficiency of tuning.
Hideo Arimoto +8 more
openaire +2 more sources
1.55 µm AlGaInAs/InP sampled grating laser diodes for mode-locking at THz frequencies [PDF]
, 2018 We report mode locking in lasers integrated with semiconductor optical amplifiers, using either conventional or phase shifted sampled grating distributed Bragg reflectors(DBRs).
Hou, Bin +4 more
core +1 more source
AIP Advances, 2023 Photocathodes based on GaAs and other III–V semiconductors are capable of producing highly spin-polarized electron beams. GaAs/GaAsP superlattice photocathodes exhibit high spin polarization; however, the quantum efficiency (QE) is limited to 1% or less.
Jyoti Biswas +8 more
doaj +1 more source
Characterization of wavelength tunable lasers for future optical communication systems [PDF]
, 2010 The use of tunable lasers (TL) in dense wavelength division multiplexed (DWDM) networks for optical switching, routing and networking has gained a lot of interest in recent years.
Anandarajah, Prince M. +4 more
core +1 more source
IEEE Journal of Microwaves, 2021 We present a 2-port terahertz vector network analyzer (VNA) based on four continuous-wave (CW) photomixers and a pair of telecom-wavelength CW lasers. The presented optoelectronic VNA is free-space coupled and can operate continuously from 0.1 THz to 1 ...
Anuar D. J. Fernandez Olvera +2 more
doaj +1 more source
Nanoscale Research Letters, 2009 We have successfully prepared anodized alumina membrane distributed Bragg reflector (DBR) using electrochemical anodization method. The transmission peak of this distributed Bragg reflector could be easily and effectively modulated to cover almost any ...
Zheng WenJun +3 more
doaj +1 more source
Monolithically integrated laser with DBR for wideband and low time delay signature chaos generation
Frontiers in Physics, 2023 Chaotic laser has attracted a large amount of attention due to its broad spectrum, noise-like characteristics, and photonic integrated chaotic semiconductor lasers have further expanded the application field of chaotic laser for their small size and ...
Shuhui Li +6 more
doaj +1 more source