
Proceedings Paper
Passively mode-locked GaSb-based VECSELs emitting sub-400-fs pulses at 2 µmFormat | Member Price | Non-Member Price |
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Paper Abstract
We review the development of the first GaSb-based passively mode-locked VECSEL generating sub-picosecond pulses
at 2 μm wavelength range. The general goal of this development was to leverage the unique features of the mode-locked
VECSELs (i.e. high-average power, sub-ps operation, high repetition rate, low-noise properties) to the 2-3 μm
wavelengths. Such lasers could have a significant impact on the development of practical ultrafast systems required for
frequency-combs, time-resolved molecular spectroscopy, THz generation, or as seeders for optical amplifiers and mid-IR
supercontinuum sources. By using semiconductor gain mirrors and saturable absorber mirrors incorporating
InGaSb/GaSb quantum wells, we have been able to demonstrate a VECSEL producing near transform-limited 384 fs
pulses at a wavelength of 1950 nm. Important part of this development has been focused on understanding the ultrafast
absorption recovery dynamics of the SESAM. An interesting observation is that the absorption recovery time of asgrown
InGaSb SESAMs is within ps range and is not much affected by a change of the growth parameters.
Paper Details
Date Published: 14 February 2012
PDF: 6 pages
Proc. SPIE 8242, Vertical External Cavity Surface Emitting Lasers (VECSELs) II, 824204 (14 February 2012); doi: 10.1117/12.907399
Published in SPIE Proceedings Vol. 8242:
Vertical External Cavity Surface Emitting Lasers (VECSELs) II
Anne C. Tropper, Editor(s)
PDF: 6 pages
Proc. SPIE 8242, Vertical External Cavity Surface Emitting Lasers (VECSELs) II, 824204 (14 February 2012); doi: 10.1117/12.907399
Show Author Affiliations
M. Guina, Tampere Univ. of Technology (Finland)
A. Härkönen, Tampere Univ. of Technology (Finland)
J. Paajaste, Tampere Univ. of Technology (Finland)
J.-P. Alanko, Tampere Univ. of Technology (Finland)
A. Härkönen, Tampere Univ. of Technology (Finland)
J. Paajaste, Tampere Univ. of Technology (Finland)
J.-P. Alanko, Tampere Univ. of Technology (Finland)
S. Suomalainen, Tampere Univ. of Technology (Finland)
C. Grebing, Tampere Univ. of Technology (Finland)
G. Steinmeyer, Tampere Univ. of Technology (Finland)
C. Grebing, Tampere Univ. of Technology (Finland)
G. Steinmeyer, Tampere Univ. of Technology (Finland)
Published in SPIE Proceedings Vol. 8242:
Vertical External Cavity Surface Emitting Lasers (VECSELs) II
Anne C. Tropper, Editor(s)
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