TY - JOUR
T1 - Short Terahertz Pulse Generation from a Dispersion Compensated Modelocked Semiconductor Laser
AU - Wang, Feihu
AU - Nong, Hanond
AU - Fobbe, Tobias
AU - Pistore, Valentino
AU - Houver, Sarah
AU - Markmann, Sergej
AU - Jukam, Nathan
AU - Amanti, Maria
AU - Sirtori, Carlo
AU - Moumdji, Souad
AU - Colombelli, Raffaele
AU - Li, Lianhe
AU - Linfield, Edmund
AU - Davies, Giles
AU - Mangeney, Juliette
AU - Tignon, Jérôme
AU - Dhillon, Sukhdeep
N1 - Funding Information:
FW, HN, VP, SH performed the experiments, TF, HN, SM, NJ contributed to the data interpretation and performed the theoretical development and simulations. MA, CS, SM and RC performed the device design and realization. LHL, EHL and AGD performed the growth of the samples. FW, HN, NJ, AGD, JM, JT, SSD wrote and developed the paper. FW, SSD contributed to the original scheme. The authors acknowledge funding from European Union FET-Open grant ULTRAQCL 665158, ANR-12-NANO-0014 “PhaseLock”, the EPSRC (UK), the EC programme (TOSCA), ERC “GEM” grant, the Royal Society and Wolfson Foundation and the Conseil Général de l'Essonne.
Publisher Copyright:
© 2017 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/7
Y1 - 2017/7
N2 - Dispersion compensation is vital for the generation of ultrashort and single cycle pulses from modelocked lasers across the electromagnetic spectrum. It is typically based on addition of an extra dispersive element to the laser cavity that introduces a chromatic dispersion opposite to that of the gain medium. To date, however, no dispersion compensation schemes have been successfully applied to terahertz (THz) quantum cascade lasers for short and stable pulse generation in the THz range. In this work, a monolithic on-chip compensation scheme is realized for a modelocked QCL, permitting THz pulses to be considerably shortened from 16ps to 4ps. This is based on the realization of a small coupled cavity resonator that acts as an ‘off resonance’ Gires-Tournois interferometer (GTI), permitting large THz spectral bandwidths to be compensated. This novel application of a GTI opens up a direct and simple route to sub-picosecond and single cycle pulses in the THz range from a compact semiconductor source.
AB - Dispersion compensation is vital for the generation of ultrashort and single cycle pulses from modelocked lasers across the electromagnetic spectrum. It is typically based on addition of an extra dispersive element to the laser cavity that introduces a chromatic dispersion opposite to that of the gain medium. To date, however, no dispersion compensation schemes have been successfully applied to terahertz (THz) quantum cascade lasers for short and stable pulse generation in the THz range. In this work, a monolithic on-chip compensation scheme is realized for a modelocked QCL, permitting THz pulses to be considerably shortened from 16ps to 4ps. This is based on the realization of a small coupled cavity resonator that acts as an ‘off resonance’ Gires-Tournois interferometer (GTI), permitting large THz spectral bandwidths to be compensated. This novel application of a GTI opens up a direct and simple route to sub-picosecond and single cycle pulses in the THz range from a compact semiconductor source.
KW - Active mode-locking
KW - Gires-Tournois interferometer
KW - Quantum cascade laser
KW - Short pulse generation
KW - Terahertz
UR - http://www.scopus.com/inward/record.url?scp=85021986350&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021986350&partnerID=8YFLogxK
U2 - 10.1002/lpor.201700013
DO - 10.1002/lpor.201700013
M3 - Article
AN - SCOPUS:85021986350
SN - 1863-8880
VL - 11
JO - Laser and Photonics Reviews
JF - Laser and Photonics Reviews
IS - 4
M1 - 1700013
ER -