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Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Mid-infrared resonant cavity light emitting diodes operating at 4.5 μm
AU - Al-Saymari, Furat
AU - Craig, Adam
AU - Lu, Qi
AU - Marshall, Andrew
AU - Carrington, Peter
AU - Krier, Anthony
PY - 2020/8/3
Y1 - 2020/8/3
N2 - We report on a mid-infrared resonant cavity light emitting diode (RCLED) operating at the wavelength of 4.5 μm with narrow spectral linewidth at room temperature. Compared to a reference LED without a resonant cavity our RCLED exhibits (85x) higher peak intensity, (13x) higher integrated output power, (16x) narrower spectral linewidth and (7x) superior temperature stability. The device consists of a one-wavelength thick micro-cavity containing an Al0.12In0.88As/InAs0.85Sb0.15 quantum well active region sandwiched between two high contrast AlAs0.08Sb0.92/GaSb distributed Bragg reflector mirrors, grown lattice–matched on GaSb by molecular beam epitaxy. The high spectral brightness, narrow linewidth and superior temperature stability, are attractive features, enabling these devices to be used for detection of N2O at 4.5 μm. We show that with only minor adjustments the gases CO2 (4.2 μm) and CO (4.6 μm) are also readily accessible.
AB - We report on a mid-infrared resonant cavity light emitting diode (RCLED) operating at the wavelength of 4.5 μm with narrow spectral linewidth at room temperature. Compared to a reference LED without a resonant cavity our RCLED exhibits (85x) higher peak intensity, (13x) higher integrated output power, (16x) narrower spectral linewidth and (7x) superior temperature stability. The device consists of a one-wavelength thick micro-cavity containing an Al0.12In0.88As/InAs0.85Sb0.15 quantum well active region sandwiched between two high contrast AlAs0.08Sb0.92/GaSb distributed Bragg reflector mirrors, grown lattice–matched on GaSb by molecular beam epitaxy. The high spectral brightness, narrow linewidth and superior temperature stability, are attractive features, enabling these devices to be used for detection of N2O at 4.5 μm. We show that with only minor adjustments the gases CO2 (4.2 μm) and CO (4.6 μm) are also readily accessible.
U2 - 10.1364/OE.396928
DO - 10.1364/OE.396928
M3 - Journal article
VL - 28
SP - 23338
EP - 23353
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 16
ER -