| Autor: |
Al-Saymari FA, Craig AP, Lu Q, Marshall ARJ, Carrington PJ, Krier A |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2020 Aug 03; Vol. 28 (16), pp. 23338-23353. |
| DOI: |
10.1364/OE.396928 |
| Abstrakt: |
We report on a mid-infrared resonant cavity light emitting diode (RCLED) operating at the wavelength of 4.5 µm with a 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 Al 0.12 In 0.88 As/InAs 0.85 Sb 0.15 quantum well active region sandwiched between two high contrast AlAs 0.08 Sb 0.92 /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 N 2 O at 4.5 µm. We show that with only minor adjustments the gases CO 2 (4.2 µm) and CO (4.6 µm) are also readily accessible. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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