標題: Tunable multi-wavelength quantum dot external-cavity lasers
作者: Pai, Chen-Hung
Lin, Gray
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: tunable lasers;external-cavity lasers;quantum-dot lasers;semiconductor lasers
公開日期: 2013
摘要: The chirped multilayer quantum-dot (QD) gain media are arranged in Fourier-transform external-cavity laser (FT-ECL) configuration. Novel slit designs select 2, 3, and 4 different wavelengths that are diffracted from the grating for optical feedback. Therefore, the dual-, triple-and quadruple-wavelength ECLs are demonstrated in this study. The resulted multi-wavelength lasing emissions are achieved under injected current of 100 mA (or 1.33 kA/cm(2)) with signal to amplified spontaneous emission (ASE) ratio over 20 dB. Around peak-gain wavelength of 12xx-nm range, the adjacent wavelength separation is over 50 nm for dual-wavelength lasing, up to 13 nm for triple-wavelength lasing, and about 4-5 nm for quadruple-wavelength lasing emissions. To further extend the wavelength separation for dual-wavelength lasing emissions, another modified scheme with two separate external mirrors are adopted and the achieved maximum value is about 126 nm in wavelength separation or over 25 THz in frequency difference. The terahertz (THz) generation by photomixing of dual-wavelength ECLs is also discussed in this study.
URI: http://hdl.handle.net/11536/22862
http://dx.doi.org/10.1117/12.2017500
ISBN: 978-0-8194-9574-7
ISSN: 0277-786X
DOI: 10.1117/12.2017500
期刊: NONLINEAR OPTICS AND APPLICATIONS VII
Volume: 8772
Appears in Collections:Conferences Paper


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