High-performance mid-infrared GaSb laser diodes for defence and sensing applications

2014 ◽  
Author(s):  
Augustinas Vizbaras ◽  
Edgaras Dvinelis ◽  
Augustinas Trinkunas ◽  
Ieva Šimonyte ◽  
Mindaugas Greibus ◽  
...  
Keyword(s):  
High Performance ◽  
Laser Diodes ◽  
Mid Infrared ◽  
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

scholarly journals 2.3 µm InGaAsSb/AlGaAsSb Quantum-Well Laser Diode via InAs/GaSb Superlattice Layer on GaAs Substrate

2016 ◽  
Vol 2016 ◽  
pp. 1-4
Author(s):  
Minghui You ◽  
Qixiang Sun ◽  
Liping Yin ◽  
Juanjuan Fan ◽  
Xuemei Liang ◽  
...  
Keyword(s):  
Laser Diode ◽  
Gaas Substrate ◽  
High Performance ◽  
Laser Diodes ◽  
Type I ◽  
Free Carrier Absorption ◽  
Mid Infrared ◽  
Quantum Well Laser ◽  
Carrier Absorption ◽  
Superlattice Layer

We present 2.3 μm InGaAsSb/AlGaAsSb type I laser diodes (LDs) on GaAs substrate; a superlattice (SL) layer was introduced as an interconnecting layer playing an important role in manipulating the optical field distribution and reducing free-carrier absorption in multiquantum wells (MQWs) for achieving balanced and optimal LDs performance. Accordingly, power of 8.6 mW was obtained with 2.3 μm wavelength. Our results demonstrate that superlattice layer may open a new avenue for high performance and improvement in mid-infrared laser diode.

scholarly journals Milliwatt-Level Spontaneous Emission Across the 3.5–8 µm Spectral Region from Pr3+ Doped Selenide Chalcogenide Fiber Pumped with a Laser Diode

2020 ◽  
Vol 10 (2) ◽  
pp. 539 ◽  
Author(s):  
Lukasz Sojka ◽  
Zhuoqi Tang ◽  
Dinuka Jayasuriya ◽  
Meili Shen ◽  
Joel Nunes ◽  
...  
Keyword(s):  
Environmental Monitoring ◽  
Spontaneous Emission ◽  
Wavelength Range ◽  
Laser Diode ◽  
Spectral Region ◽  
Laser Diodes ◽  
Molecular Sensing ◽  
Mid Infrared ◽  
Sensing Applications ◽  
First Time

A spontaneous emission fiber source operating in the mid-infrared (MIR) wavelength range from 3.5 to 8 µm is demonstrated for the first time at output power levels of at least 1 mW. The source is a Pr3+-doped selenide chalcogenide, multimode, glass fiber pumped with commercially available laser diodes operating at 1.470 µm, 1.511 µm and 1.690 µm. This MIR spontaneous emission fiber source offers a viable alternative to broadband mid-infrared supercontinuum fiber sources, which are comparatively complex and costly. The MIR emission wavelength range is significant for molecular sensing applications across biology and chemistry, and in medicine, agriculture, defense, and environmental monitoring.

scholarly journals Tunable single-mode chip-scale mid-infrared laser

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Euijae Shim ◽  
Andres Gil-Molina ◽  
Ohad Westreich ◽  
Yamac Dikmelik ◽  
Kevin Lascola ◽  
...  
Keyword(s):  
Output Power ◽  
High Performance ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Single Frequency ◽  
Mid Infrared ◽  
Mode Suppression ◽  
Sensing Applications ◽  
Interband Cascade Laser ◽  
On Chip

AbstractPortable mid-infrared (mid-IR) spectroscopy and sensing applications require widely tunable, chip-scale, single-mode sources without sacrificing significant output power. However, no such lasers have been demonstrated beyond 3 μm due to the challenge of building tunable, high quality-factor (Q) on-chip cavities. Here we demonstrate a tunable, single-mode mid-IR laser at 3.4 μm using a tunable high-Q silicon microring cavity and a multi-mode Interband Cascade Laser. We achieve single-frequency lasing with 0.4 mW output power via self-injection locking and a wide tuning range of 54 nm with 3 dB output power variation. We further estimate an upper-bound effective linewidth of 9.1 MHz and a side mode suppression ratio of 25 dB from the locked laser using a scanning Fabry-Perot interferometer. Our laser platform based on a tunable high-Q microresonator can be expanded to higher wavelength quantum-cascade lasers and lead to the development of compact, high-performance mid-IR sensors for spectroscopic applications.

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.

In Situ Assembly of Ordered Hierarchical CuO Microhemisphere Nanowire Arrays for High‐Performance Bifunctional Sensing Applications

Small Methods ◽  
2021 ◽  
pp. 2100202
Author(s):  
Tiantian Dai ◽  
Zanhong Deng ◽  
Xiaodong Fang ◽  
Huadong Lu ◽  
Yong He ◽  
...  
Keyword(s):  
High Performance ◽  
Nanowire Arrays ◽  
Sensing Applications

scholarly journals Recent Advances in ZnO-Based Carbon Monoxide Sensors: Role of Doping

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4425
Author(s):  
Ana María Pineda-Reyes ◽  
María R. Herrera-Rivera ◽  
Hugo Rojas-Chávez ◽  
Heriberto Cruz-Martínez ◽  
Dora I. Medina
Keyword(s):  
Carbon Monoxide ◽  
High Performance ◽  
Gas Sensing ◽  
Experimental Studies ◽  
Electrical Performance ◽  
Long Term Stability ◽  
Sensing Applications ◽  
Recent Advances ◽  
Sensitivity And Selectivity ◽  
Doped Zno

Monitoring and detecting carbon monoxide (CO) are critical because this gas is toxic and harmful to the ecosystem. In this respect, designing high-performance gas sensors for CO detection is necessary. Zinc oxide-based materials are promising for use as CO sensors, owing to their good sensing response, electrical performance, cost-effectiveness, long-term stability, low power consumption, ease of manufacturing, chemical stability, and non-toxicity. Nevertheless, further progress in gas sensing requires improving the selectivity and sensitivity, and lowering the operating temperature. Recently, different strategies have been implemented to improve the sensitivity and selectivity of ZnO to CO, highlighting the doping of ZnO. Many studies concluded that doped ZnO demonstrates better sensing properties than those of undoped ZnO in detecting CO. Therefore, in this review, we analyze and discuss, in detail, the recent advances in doped ZnO for CO sensing applications. First, experimental studies on ZnO doped with transition metals, boron group elements, and alkaline earth metals as CO sensors are comprehensively reviewed. We then focused on analyzing theoretical and combined experimental–theoretical studies. Finally, we present the conclusions and some perspectives for future investigations in the context of advancements in CO sensing using doped ZnO, which include room-temperature gas sensing.

scholarly journals Perfect Absorption and Refractive-Index Sensing by Metasurfaces Composed of Cross-Shaped Hole Arrays in Metal Substrate

Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 63
Author(s):  
Zhendong Yan ◽  
Chaojun Tang ◽  
Guohua Wu ◽  
Yumei Tang ◽  
Ping Gu ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Narrow Band ◽  
Label Free ◽  
Hybrid Mode ◽  
Perfect Absorption ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Silver Substrate ◽  
Hole Arrays

Achieving perfect electromagnetic wave absorption with a sub-nanometer bandwidth is challenging, which, however, is desired for high-performance refractive-index sensing. In this work, we theoretically study metasurfaces for sensing applications based on an ultra-narrow band perfect absorption in the infrared region, whose full width at half maximum (FWHM) is only 1.74 nm. The studied metasurfaces are composed of a periodic array of cross-shaped holes in a silver substrate. The ultra-narrow band perfect absorption is related to a hybrid mode, whose physical mechanism is revealed by using a coupling model of two oscillators. The hybrid mode results from the strong coupling between the magnetic resonances in individual cross-shaped holes and the surface plasmon polaritons on the top surface of the silver substrate. Two conventional parameters, sensitivity (S) and figure of merit (FOM), are used to estimate the sensing performance, which are 1317 nm/RIU and 756, respectively. Such high-performance parameters suggest great potential for the application of label-free biosensing.

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