scholarly journals Distributed feedback GaSb based laser diodes with buried grating: a new field of single-frequency sources from 2 to 3 µm for gas sensing applications

2015 ◽  
Vol 23 (15) ◽  
pp. 19118 ◽  
Author(s):  
Quentin Gaimard ◽  
Meriam Triki ◽  
Tong Nguyen-Ba ◽  
Laurent Cerutti ◽  
Guilhem Boissier ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Laser Diodes ◽  
Distributed Feedback ◽  
Single Frequency ◽  
Sensing Applications

Folded-cavity surface-emitting distributed feedback 1.39-um wavelength InGaAsP/InP laser diodes for gas-sensing applications

1996 ◽  
Author(s):  
Chih-Ping Chao ◽  
Dmitri Z. Garbuzov ◽  
Stephen R. Forrest ◽  
Ramon U. Martinelli ◽  
Raymond J. Menna ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Laser Diodes ◽  
Distributed Feedback ◽  
Cavity Surface ◽  
Sensing Applications

GaSb-based D-DFB laser diodes for gas sensing applications in the mid-infrared region

2021 ◽  
Author(s):  
Morten Hoppe ◽  
Christian Assmann ◽  
Sebastian Schmidtmann ◽  
Tobias Milde ◽  
Martin Honsberg ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Laser Diodes ◽  
Infrared Region ◽  
Mid Infrared ◽  
Sensing Applications ◽  
Dfb Laser

Tunable distributed-feedback quantum-cascade lasers for gas-sensing applications

1998 ◽  
Author(s):  
Claire F. Gmachl ◽  
Federico Capasso ◽  
Jerome Faist ◽  
Deborah L. Sivco ◽  
James N. Baillargeon ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Quantum Cascade Lasers ◽  
Distributed Feedback ◽  
Quantum Cascade ◽  
Sensing Applications ◽  
Cascade Lasers

scholarly journals Electrically injected parity-time symmetric distributed feedback laser diodes (DFB) for telecom applications

Nanophotonics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 1309-1317
Author(s):  
Vincent Brac de la Perrière ◽  
Quentin Gaimard ◽  
Henri Benisty ◽  
Abderrahim Ramdane ◽  
Anatole Lupu
Keyword(s):  
Optical Transmission ◽  
Light Propagation ◽  
Optical Feedback ◽  
Laser Diodes ◽  
Distributed Feedback ◽  
Single Frequency ◽  
Distributed Feedback Laser ◽  
New Paradigm ◽  
Time Symmetry ◽  
Dfb Laser

Abstract The new paradigm of parity-time symmetry in quantum mechanics has readily been applied in the field of optics with numerous demonstrations of exotic properties in photonic systems. In this work, we report on the implementation of single frequency electrically injected distributed feedback (DFB) laser diodes based on parity-time symmetric dual gratings in a standard ridge waveguide configuration. We demonstrate enhanced modal discrimination for these devices as compared with index or gain coupled ones, fabricated in the same technology run. Optical transmission probing experiments further show asymmetric amplification in the light propagation confirming the parity-time symmetry signature of unidirectional light behavior. Another asset of these complex coupled devices is further highlighted in terms of robustness to optical feedback.

Effect of Grain Size on Strain in a Copper Oxide Nanofilm for Gas Sensing Applications

2019 ◽  
Vol 11 (5) ◽  
pp. 05040-1-05040-4
Author(s):  
Sumanta Kumar Tripathy ◽  
◽  
Sanjay Kumar ◽  
Divya Aparna Narava ◽  
◽  
...  
Keyword(s):  
Grain Size ◽  
Copper Oxide ◽  
Gas Sensing ◽  
Sensing Applications

1.5μm λ/4 shifted multiple quantum well distributed feedback laser diodes

1988 ◽  
Vol 24 (23) ◽  
pp. 1408 ◽  
Author(s):  
T. Sasaki ◽  
S. Takano ◽  
N. Henmi ◽  
H. Yamada ◽  
M. Kitamura ◽  
...  
Keyword(s):  
Quantum Well ◽  
Multiple Quantum Well ◽  
Laser Diodes ◽  
Distributed Feedback ◽  
Multiple Quantum ◽  
Distributed Feedback Laser

scholarly journals Optimization of a Low-Power Chemoresistive Gas Sensor: Predictive Thermal Modelling and Mechanical Failure Analysis

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 783 ◽  
Author(s):  
Andrea Gaiardo ◽  
David Novel ◽  
Elia Scattolo ◽  
Michele Crivellari ◽  
Antonino Picciotto ◽  
...  
Keyword(s):  
Low Power ◽  
Failure Analysis ◽  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Mechanical Failure ◽  
Sensing Applications ◽  
Theoretical Approaches ◽  
Sensing Material ◽  
Silicon Bulk

The substrate plays a key role in chemoresistive gas sensors. It acts as mechanical support for the sensing material, hosts the heating element and, also, aids the sensing material in signal transduction. In recent years, a significant improvement in the substrate production process has been achieved, thanks to the advances in micro- and nanofabrication for micro-electro-mechanical system (MEMS) technologies. In addition, the use of innovative materials and smaller low-power consumption silicon microheaters led to the development of high-performance gas sensors. Various heater layouts were investigated to optimize the temperature distribution on the membrane, and a suspended membrane configuration was exploited to avoid heat loss by conduction through the silicon bulk. However, there is a lack of comprehensive studies focused on predictive models for the optimization of the thermal and mechanical properties of a microheater. In this work, three microheater layouts in three membrane sizes were developed using the microfabrication process. The performance of these devices was evaluated to predict their thermal and mechanical behaviors by using both experimental and theoretical approaches. Finally, a statistical method was employed to cross-correlate the thermal predictive model and the mechanical failure analysis, aiming at microheater design optimization for gas-sensing applications.

Sign in / Sign up

Export Citation Format

Share Document