GaSb superluminescent diodes with broadband emission at 2.55 μ m
Zia, Nouman; Viheriälä, Jukka; Koivusalo, Eero; Virtanen, Heikki; Aho, Antti; Suomalainen, Soile; Guina, Mircea (2018-01)
Zia, Nouman
Viheriälä, Jukka
Koivusalo, Eero
Virtanen, Heikki
Aho, Antti
Suomalainen, Soile
Guina, Mircea
01 / 2018
051106
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201802271323
https://urn.fi/URN:NBN:fi:tty-201802271323
Kuvaus
Peer reviewed
Tiivistelmä
We report the development of superluminescent diodes (SLDs) emitting mW-level output power in a broad spectrum centered at a wavelength of 2.55 μm. The emitting structure consists of two compressively strained GaInAsSb/GaSb-quantum wells placed within a lattice-matched AlGaAsSb waveguide. An average output power of more than 3 mW and a peak power of 38 mW are demonstrated at room temperature under pulsed operation. A cavity suppression element is used to prevent lasing at high current injection allowing emission in a broad spectrum with a full width at half maximum (FWHM) of 124 nm. The measured far-field of the SLD confirms a good beam quality at different currents. These devices open further development possibilities in the field of spectroscopy, enabling, for example, detection of complex molecules and mixtures of gases that manifest a complex absorption spectrum over a broad spectral range.
Kokoelmat
- TUNICRIS-julkaisut [16726]