Single Mode 2 μm GaSb Based Laterally Coupled Distributed Feedback Quantum-Well Laser Diodes with Metal Grating

Song, Yuzhi; Zhang, Yu; Song, Jun; Li, Kangwen; Zhang, Zuyin; Xu, Ya‐Qiong; Song, Guofeng; Chen, Lianghui

doi:10.1088/0256-307x/32/7/074206

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…Molecular gases often show significantly stronger absorption within the mid-infrared (MIR) than in the near-infrared or visible spectral regime. In this MIR region, many important gases have significant absorption lines that are crucial in healthcare, production supervision, and safety and environmental monitoring [1][2][3]. For this work, we restricted ourselves to methane, which is a major greenhouse gas and a monitor gas for lung cancer [4].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the spectral excitation behavior of methane according to InP, GaSb, IC, and QC lasers as excitation source by sensor applications

et al. 2019

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The MIR wavelength regime promises better gas detection possibilities than the NIR or the visible region because of the higher absorbencies simulated by HITRAN. In the MIR region are many important absorption lines of significant gases, which are relevant in healthcare, production supervision, and safety and environmental monitoring. One of those gases is methane. CH4 shows significant variations in absorbance with a maximum at 3.3 μm, which results in low detection limits in the range of low ppm. Interband-cascade-and quantumcascade-based lasers emit at higher wavelengths, where the absorbencies of methane are higher. The comparison is done by analyzing the performance of two spectroscopy applications: tunable diode laser absorption spectroscopy and quartz-enhanced photoacoustic spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Comparison of the spectral excitation behavior of methane according to InP, GaSb, IC, and QC lasers as excitation source by sensor applications

et al. 2019

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“…[11,12] Among the diverse schemes, incorporating an appropriate light management structure is an effective way of improving light absorption without increasing the thickness of the photoactive layers, and thus has been developed into one of the frontiers. It has been suggested that various antireflection structures, [13][14][15][16][17][18] photonic crystals, [19][20][21][22][23][24] metallic nanoparticles, [25][26][27][28][29][30] and gratings [31][32][33][34][35][36] be used to enhance light absorption of the relevant devices. However, it is notable that the balance between light absorption enhancement and complexity of the light management structures should be seriously taken into consideration for solar cell applications.…”

Section: Introductionmentioning

confidence: 99%

Enhancing light absorption for organic solar cells using front ITO nanograting and back ultrathin Al layer*

Zhang¹,

Liu²,

Wang³

et al. 2021

Chinese Phys. B

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To address the discrepancy between carrier collection and light absorption of organic solar cells caused by the limited carrier mobility and optical absorption coefficient for the normally employed organic photoactive layers, a light management structure composed of a front indium tin oxide (ITO) nanograting and ultrathin Al layer inserted in between the photoactive layer and the electron transport layer (ETL) is introduced. Owing to the antireflection and light scattering induced by the ITO nanograting and the suppression of light absorption in the ETL by the inserted Al layer, the light absorption of the photoactive layer is significantly enhanced in a spectral range from 400 nm to 650 nm that also covers the main energy region of solar irradiation for the normally employed active materials such as the P3HT:PC 61 BM blend. The simulation results indicate that comparing with the control device with a planar configuration of ITO/PEDOT:PSS/P3HT:PC 61 BM (80-nm thick)/ZnO/Al, the short-circuit current density and power conversion efficiency of the optimized light management structure can be improved by 32.86% and 34.46%. Moreover, good omnidirectional light management is observed for the proposed device structure. Owing to the fact that the light management structure possesses the simple structure and excellent performance, the exploration of such a structure can be believed to be significant in fabricating the thin film-based optoelectronic devices.

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“…Tunable diode laser absorption spectroscopy (TDLAS) is a versatile and robust method for gas sensing with applications ranging in industry, health and safety (e.g., toxic gas, alcohol, and explosives), and medicine [1][2][3]. Gallium antimonide (GaSb) is an important material system for single mode diode lasers for the near and mid-infrared spectral region.…”

Section: Introductionmentioning

confidence: 99%

Single mode GaSb diode lasers for sensor applications in a long wavelength regime

et al. 2017

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The wavelength, λ, range of 1.8 μm≤λ≤3.5 μm contains strong spectral absorption lines of many gases used in health, industry, safety, and medicine and whose sensitive and quantitative detection is desirable. However, the performance of InP diode lasers markedly deteriorates beyond λ∼2 μm. In this paper we present new results on developing tunable high power single mode laser diodes based on the GaSb material system with emission in the wavelength range of 1.8 μm≤λ≤2.2 μm.

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Single Mode 2 μm GaSb Based Laterally Coupled Distributed Feedback Quantum-Well Laser Diodes with Metal Grating

Cited by 6 publications

References 22 publications

Comparison of the spectral excitation behavior of methane according to InP, GaSb, IC, and QC lasers as excitation source by sensor applications

Comparison of the spectral excitation behavior of methane according to InP, GaSb, IC, and QC lasers as excitation source by sensor applications

Enhancing light absorption for organic solar cells using front ITO nanograting and back ultrathin Al layer*

Single mode GaSb diode lasers for sensor applications in a long wavelength regime

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