Narrowing of the emission spectra of high-power laser diodes with a volume Bragg grating recorded in photo-thermo-refractive glass
- Authors: Ivanov S.A.1, Nikonorov N.V.1, Ignat’ev A.I.1, Zolotarev V.V.2, Lubyanskiy Y.V.2, Pikhtin N.A.2,3, Tarasov I.S.2
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Affiliations:
- ITMO University
- Ioffe Physical–Technical Institute
- St. Petersburg State University
- Issue: Vol 50, No 6 (2016)
- Pages: 819-823
- Section: Physics of Semiconductor Devices
- URL: https://journals.rcsi.science/1063-7826/article/view/197292
- DOI: https://doi.org/10.1134/S1063782616060087
- ID: 197292
Cite item
Abstract
The spectral characteristics of a high-power semiconductor laser with an external cavity in which longitudinal-mode selection is implemented by means of a holographic volume Bragg grating recorded in photo-thermo-refractive glass are investigated. Mode selection leads to narrowing of the spectrum of the laser diode from an initial width of 6 nm to 5 Å. In the narrowed spectrum, a fine structure representing a set of eigenmodes that correspond to the length of a laser chip is resolved. The number of these modes is limited by the width of the spectral selectivity curve of the grating. It is shown that insertion of the grating into the cavity leads to severalfold enhancement of the grating selectivity. It is demonstrated that the implemented external-cavity design makes it possible to smoothly tune the laser emission wavelength in a 10-nm range.
About the authors
S. A. Ivanov
ITMO University
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 197101
N. V. Nikonorov
ITMO University
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 197101
A. I. Ignat’ev
ITMO University
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 197101
V. V. Zolotarev
Ioffe Physical–Technical Institute
Author for correspondence.
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
Ya. V. Lubyanskiy
Ioffe Physical–Technical Institute
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
N. A. Pikhtin
Ioffe Physical–Technical Institute; St. Petersburg State University
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 199034
I. S. Tarasov
Ioffe Physical–Technical Institute
Email: zolotarev.bazil@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021