Milestone results
2022
First SESAM modelocked back-side cooled 2-µm VECSEL [Ref. Download 492 (PDF, 1.1 MB)]: Both femtosecond and picosecond pulse generation using newly developed SESAMs in the 2-µm regime in 2021, described in more details in the following references [Ref. Download 477 (PDF, 3.2 MB) and Download 495 (PDF, 11.3 MB)]
2021
High power cw 2-µm VECSEL: high average output power from a backside-cooled 2-µm InGaSb VECSEL with full gain characterization [Ref. Download 487 (PDF, 4.9 MB)]
Dual-comb ranging with a free-running single-cavity near infrared dual-comb MIXSEL [Ref. Download 482 (PDF, 2.7 MB)]
2019
Calibration of high-accuracy spectrometers using a stabilized 11-GHz MIXSEL comb Download [Ref. 464] (PDF, 1 MB)
Dual-comb spectroscopy of acetylene using an unstabilized femtosecond 2.7-GHz dual-comb MIXSEL at a center wavelength of 1.03 µm Download [Ref. 454] (PDF, 3.6 MB)
Tighly locked optical frequency comb using a SESAM-modelocked VECSEL with 122-fs pulses and 160 mW average output power with supercontinuum generation in a silicon nitride waveguide. No additional external amplification or pulse compression was required. Download [Ref. 453] (PDF, 1.9 MB)
Record pulse-duration performance of a femtosecond MIXSEL Download [Ref. 451] (PDF, 1.9 MB):
- 140 fs, 2.73 GHz, 30 mW, 1033 nm
2018
Not all QD-VECSELs support stable modelocking: Mode-locking instabilities for high-gain semiconductor disk lasers based on active submonolayer quantum dots Download Ref. [449] (PDF, 899 KB)
Watch out for multipulse instabilities of a femtosecond SESAM-modelocked VECSEL Download Ref. [447] (PDF, 2.3 MB)
Record performance of a SESAM modelocked QD-VECSEL at a center wavelength of 1035 nm Download Ref. [441] (PDF, 1.2 MB):
- 216 fs, 269 mW, 2.77 GHz
- 193 fs, 112 mW, 1.67 GHz
2017
Coherent beam combining and noise analysis of a colliding pulse modelocked VECSEL Download Ref. [423] (PDF, 2 MB)
Multiphoton in vivo imaging: We can demonstrate equivalent signal levels compared to a standard 80-MHz Ti:Sapphire laser when we increase the average power by a factor of 4.5 as predicted by theory. In addition, we compare the bleaching properties of both laser systems in fixed Drosophila larvae and find similar bleaching kinetics despite the large difference in pulse repetition rates. Download Ref. [421] (PDF, 10.9 MB)
Dual-comb spectroscopy with one laser: A single free-running compact semiconductor laser simultaneously generating two coherent modelocked picosecond pulse trains is used to demonstrate accurate dual-comb spectroscopy on water vapor in the near infrared Download Ref. [420] (PDF, 583 KB)
A paradigm shift in dual-comb spectroscopy: one unstabilized laser is enough (Link to News)
Video on dual-comb spectroscopy
(click on the image to start)
Record-short pulses of 184 fs from a gigahertz MIXSEL emitting at a center wavelength of 1048 nm with 115 mW average output power and physical explanation for observed trade-off in optical pump efficiency with shorter pulses Download Ref. [419] (PDF, 4.2 MB)
2016
Dual-comb modelocked lasers: SESAM decouples noise stabilization Download Ref. [403] (PDF, 2 MB)
High-power 100-fs pulses from a SESAM modelocked VECSEL Download Ref. [410] (PDF, 2.7 MB)
2015
First dual-comb modelocked laser (here with ps MIXSEL) Download Ref. [386] (PDF, 1.4 MB)
2014
Record-low noise performance of MIXSELs
Download Ref. [363] (PDF, 857 KB)
Pulse repetition rate scaling from 5 to 100 GHz with high power MIXSELs
Download Ref. [367] (PDF, 2.4 MB)
Modelocked EP-VECSEL optimized - pulses as short as 2.5 ps
Download Ref. [368] (PDF, 635 KB)
Frequency combs from VECSELs: CEO frequency beat signal first time detected from a passively modelocked VECSEL
Download Ref. [371] (PDF, 2.8 MB)
2013
Shortest pulse duration of a modelocked EP-VECSEL (6.3 ps)
Download Ref. [350] (PDF, 636 KB)
First femtosecond MIXSEL
Download Ref. [357] (PDF, 3.3 MB)
2012
Characterization of the dynamic gain of VECSELs
Download Ref. [324] (PDF, 1.1 MB)
Shortest pulse duration of modelocked EP-VECSEL (9.5 ps)
Download Ref. [337] (PDF, 1.3 MB)
Modelocked VECSEL with low repetition rate using a multipass-cavity approach
Download Ref. [340] (PDF, 1.1 MB)
2011
First femtosecond VECSEL with more than 1 W average output power
Download Ref. [312] (PDF, 1.5 MB)
Femtosecond VECSEL with tunable repetition rate (6.5 GHz up to 11.3 GHz)
Download Ref. [319] (PDF, 1.1 MB)
EP-VECSEL with >100 mW cw output power
Download Ref. [321] (PDF, 667 KB)
2010
Experimental verification of a soliton-like modelocking mechanism in modelocked VECSELs
Download Ref. [297] (PDF, 4.9 MB)
Picosecond antiresonant MIXSEL with record-high 6.4 W average output power (highest ouput power so far from a modelocked semiconductor laser)
Download Ref. [305] (PDF, 2.2 MB)
2008
First modelocked QD-VECSEL (Quantum Dot (QD) gain layers instead of Quantum Well (QW) layers)
Download Ref. [276] (PDF, 291 KB)
VECSEL generating more than 20 W cw output power with a fundamental Gaussian Beam
Download Ref. [278] (PDF, 217 KB)
2007
First demonstration of a MIXSEL
Download Ref. [265] (PDF, 357 KB)
2006
50-GHz passively modelocked VECSEL with 100 mW average output power
Download Ref. [252] (PDF, 1.9 MB)
2001
Picosecond VECSEL with >200 mW average output power
Download Ref. [146] (PDF, 94 KB)
2000
First SESAM modelocked VECSEL
Download Ref. 134 (PDF, 37 KB)
1997
First optically pumped VECSEL:
F. Kuznetsov, F. Hakimi, R. Sprague, and A. Mooradian,
external page “High-power (>0.5-W CW) diode-pumped vertical-external cavity surface-emitting semiconductor lasers with circular TEM beams,”
IEEE Photon. Technol. Lett., vol. 9, pp. 1063–1065, 1997