✦ LIBER ✦
Wavelength tuning of GaAs/AlGaAs terahertz quantum cascade lasers by controlling aluminum content in barriers
✍ Scribed by N. Samal; Y.G. Sadofyev; S. Annamalai; L. Chen; A. Samal; S.R. Johnson
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 259 KB
- Volume
- 323
- Category
- Article
- ISSN
- 0022-0248
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✦ Synopsis
We present an approach of uniformly changing the barrier height of AlGaAs in GaAs/AlGaAs based Terahertz (THz) quantum cascade laser structures for tuning the emission wavelengths. By uniformly changing the aluminum content of all the barriers from 15.5% to 13.5% -in a set of 5 MBE-grown samplesemission wavelengths from $ 70 to 67.5 mm, in nearly equal steps, are realized.