Coherent emission from integrated Talbot-cavity quantum cascade Lasers
Coherent emission from integrated Talbot-cavity quantum cascade Lasers
We report experimental realization of phase-locked quantum cascade laser (QCL) array using a monolithically integrated Talbot cavity. An array with six laser elements at a wavelength of ~4.8 µm shows a maximum peak power of ~4 W which is more than 5 times higher than that of a single ridge laser element and a slope efficiency of 1 W/A at room temperature. Operation of in-phase coherent supermode has been achieved over the whole dynamic range of the Talbot-cavity QCL. The structure was analysed using a straightforward theoretical model, showing quantitatively good agreement with the experimental results. The reduced thermal resistance makes the structure an attractive approach to achieve high beam quality continuous wave QCLs.
3077-3082
Meng, Bo
25802e43-f199-4367-8fd7-30bd8434f4be
Qiang, Bo
586d2613-c900-45cc-b2cb-572bc3c94760
Rodriguez, Etienne
ae9cac4e-1327-4c86-a2d8-e1d3d107e5e3
Hu, Xiao Nan
4c85d78b-b643-4009-b52c-8d772a46e1e6
Liang, Guozhen
67c60158-be78-4adc-baa9-6d1afe382a33
Wang, Qi Jie
40714035-7a37-4f8c-a50d-9b2e4061e059
20 February 2017
Meng, Bo
25802e43-f199-4367-8fd7-30bd8434f4be
Qiang, Bo
586d2613-c900-45cc-b2cb-572bc3c94760
Rodriguez, Etienne
ae9cac4e-1327-4c86-a2d8-e1d3d107e5e3
Hu, Xiao Nan
4c85d78b-b643-4009-b52c-8d772a46e1e6
Liang, Guozhen
67c60158-be78-4adc-baa9-6d1afe382a33
Wang, Qi Jie
40714035-7a37-4f8c-a50d-9b2e4061e059
Meng, Bo, Qiang, Bo, Rodriguez, Etienne, Hu, Xiao Nan, Liang, Guozhen and Wang, Qi Jie
(2017)
Coherent emission from integrated Talbot-cavity quantum cascade Lasers.
Optics Express, 25 (4), .
(doi:10.1364/OE.25.003077).
Abstract
We report experimental realization of phase-locked quantum cascade laser (QCL) array using a monolithically integrated Talbot cavity. An array with six laser elements at a wavelength of ~4.8 µm shows a maximum peak power of ~4 W which is more than 5 times higher than that of a single ridge laser element and a slope efficiency of 1 W/A at room temperature. Operation of in-phase coherent supermode has been achieved over the whole dynamic range of the Talbot-cavity QCL. The structure was analysed using a straightforward theoretical model, showing quantitatively good agreement with the experimental results. The reduced thermal resistance makes the structure an attractive approach to achieve high beam quality continuous wave QCLs.
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oe-25-4-3077
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Published date: 20 February 2017
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Local EPrints ID: 441698
URI: http://eprints.soton.ac.uk/id/eprint/441698
ISSN: 1094-4087
PURE UUID: 2d10c480-4a84-47a7-9267-2546787f7331
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Date deposited: 24 Jun 2020 16:30
Last modified: 16 Mar 2024 08:18
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Author:
Bo Meng
Author:
Bo Qiang
Author:
Etienne Rodriguez
Author:
Xiao Nan Hu
Author:
Guozhen Liang
Author:
Qi Jie Wang
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