F.R. Laughton
University of Bath
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Publication
Featured researches published by F.R. Laughton.
IEEE Photonics Technology Letters | 1996
B. Zhu; I.H. White; K.A. Williams; F.R. Laughton; R.V. Pentry
Picosecond optical pulse amplification along with spatial mode filtering has been demonstrated, using a tapered traveling wave semiconductor post-amplifier and multicontact Q-switched bow-tie laser. Optical pulses of 13 ps duration were generated with a single-lobed, near diffraction-limited radiation pattern. Peak powers of 44.7 W, and pulse energies as high as 0.58 nJ were observed.
IEEE Photonics Technology Letters | 1997
K.A. Williams; I.H. White; Richard V. Penty; F.R. Laughton
A large signal dynamic beam propagation model has been developed to describe the gain-switched operation of GaAs-AlGaAs double tapered waveguide bow-tie laser diodes. Good agreement is demonstrated between experiment and theory, highlighting the role of nonuniform carrier depletion and transverse mode spatial hole-burning in limiting peak pulse powers on picosecond time scales.
conference on lasers and electro optics | 1994
Ka Kevin Williams; I.H. White; F.R. Laughton; J. Sarma; Richard V. Penty; I. Middlemost; T. Ryan; John S. Roberts
The passive mode-locking in novel double tapered Bow-Tie lasers is investigated. This investigation aims to determine the possible GHz repetition rate at which passive mode-locking is derived, in addition, the record power levels will also be demonstrated. Alternative drive schemes and contact configurations to achieve optimized performance are discussed.
lasers and electro-optics society meeting | 1995
K.A. Williams; Huw D. Summers; M.K.A. Rahman; J. Muller; F.R. Laughton; I.H. White; Richard V. Penty; Z. Jiang; J. Sarma; I. Middlemast; J.D. Ralston
We report the monolithic passive mode-locking of a single contact tapered laser without a separate saturable absorber section. Pulsewidths of 850 fs have been achieved at a repetition rate of 116 GHz, with average powers of about 8 mW. The drive current range over which mode-locking is observed is enhanced compared with passive mode-locking in multisection lasers. The physical mechanisms believed to be responsible for the mode-locked operation arise directly from the nature of the taper itself. Due to the single contact electrical driving conditions, this device is suitable for obtaining mode-locked pulses in a very simple manner and, unlike multisection lasers, can be easily mounted p-side down for efficient heat-sinking for CW mode-locked operation.
Electronics Letters | 1994
K.A. Williams; J. Sarma; I.H. White; Richard V. Penty; I. Middlemast; T. Ryan; F.R. Laughton; John S. Roberts
IEEE Photonics Technical Letters | 1996
B. Zhu; I.H. White; Ka Kevin Williams; F.R. Laughton; Richard V. Penty
Electronics Letters | 1995
J.D. Ralston; F.R. Laughton; P. Chazan; E.C. Larkins; M. Maier; M.K. Abd Rahman; I.H. White
conference on lasers and electro-optics | 1995
Huw D. Summers; I.H. White; F.R. Laughton; J. D. Ralston; Richard V. Penty; Ka Kevin Williams; J. Sarma; I. Middlemast; T. Ryan
Electronics Letters | 1997
Igor Khrushchev; Dj Kitcher; K.A. Williams; I.H. White; F.R. Laughton; Richard V. Penty
conference on lasers and electro-optics | 1996
K.A. Williams; l.H. White; F.R. Laughton; Z. Jiang; Richard V. Penty
