Zobrazeno 1 - 10
of 103
pro vyhledávání: '"John-Mark Hopkins"'
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
For many years, Ti:sapphire was the prototypical example of a solid-state laser material that could not be diode pumped. The rationale for this assessment follows from the laser properties of Ti:sapphire, which combine to demand high brightness pumpi
Autor:
John-Mark Hopkins, Martin D. Dawson, Alexander A. Lagatsky, Christian T. A. Brown, N. K. Stevenson
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
To date, demonstrated ultrashort pulse seed sources for Ho3+-doped amplifiers, such as Ho:YAG and Ho:YLF, leave a lot to be desired in terms of complexity, cost, and efficiency. Sources like those used in [1] involve nonlinear energy transfer schemes
Publikováno v:
Optics express. 26(6)
We report a broadly wavelength-tunable femtosecond diode-pumped Ti:sapphire laser, passively mode-locked using both semiconductor saturable absorber mirror (SESAM) and Kerr-lens mode-locking (KLM) techniques. Using two pump laser diodes (operating at
Autor:
N. K. Stevenson, Christian Kränkel, Alexander A. Lagatsky, Christian T. A. Brown, John-Mark Hopkins, Martin D. Dawson
We report on the first demonstration, to the best of our knowledge, of a diode-pumped Tm:LuScO3 laser. Efficient and broadly tunable continuous wave operation in the 1973-2141 nm region and femtosecond mode-locking through the use of an ion-implanted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b5a5d1ad42f8b38967e231aa65c4518
https://strathprints.strath.ac.uk/64571/1/Stevenson_etal_OL_2018_Diode_pumped_femtosecond_Tm3.pdf
https://strathprints.strath.ac.uk/64571/1/Stevenson_etal_OL_2018_Diode_pumped_femtosecond_Tm3.pdf
Publikováno v:
University of Strathclyde
Advanced Solid State Lasers 2017
Advanced Solid State Lasers 2017
We report a diode-pumped ultrafast Ti:sapphire laser tunable over a 50 nm range. Sub-100 fs pulses are generated at a pulse repetition rate of 139 MHz with a maximum average output power of 430 mW.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bfbbfde2a18f98eb5680a38cb672c30
https://strathprints.strath.ac.uk/63475/1/Coyle_etal_OSALC_2017_A_broadly_tunable_ultrafast_diode_pumped.pdf
https://strathprints.strath.ac.uk/63475/1/Coyle_etal_OSALC_2017_A_broadly_tunable_ultrafast_diode_pumped.pdf
Autor:
N. K. Stevenson, Henry T. Bookey, Martin D. Dawson, Christian T. A. Brown, John-Mark Hopkins, Ajoy K. Kar, Alexander A. Lagatsky, James M. Morris
Publikováno v:
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Ultrafast laser inscription (ULI) allows the fabrication of compact, highly-efficient and robust laser sources over a broad range of crystalline, ceramic and glass gain media. For instance, subsurface waveguides can be formed by the stress induced re
Autor:
Alan J. Kemp, Stephane Calvez, David Burns, John-Mark Hopkins, Zhang Yanfeng, Martin D. Dawson, Jennifer E. Hastie, Erdan Gu
Publikováno v:
Optical Engineering of Diamond
Publikováno v:
Lasers Congress 2016 (ASSL, LSC, LAC).
Femtosecond-pulse operation of a diode-pumped Tm:Lu2O3 ceramic laser at 2068 nm is reported. Transform-limited pulses of 242 fs are generated with an average output power of 500 mW at 75 MHz pulse repetition rate.
Publikováno v:
Laser & Photonics Review. 2:160-181
A review on the recent developments in the field of long-wavelength (A > 1.2 μm) high-brightness optically-pumped semiconductor disk lasers (OPSDLs) is presented. As thermal effects have such a crucial impact on the laser performance particular emph
Autor:
Alan J. Kemp, John-Mark Hopkins, Joachim Wagner, Marcel Rattunde, A.J. Maclean, David Burns, N. Schulz
Publikováno v:
IEEE Journal of Quantum Electronics. 44:125-135
Finite element analysis is used to study heat flow in a 2.3-mum semiconductor disk laser (or vertical-external-cavity surface-emitting laser) based on GalnAsSb-AlGaAsSb. An intra-cavity diamond heatspreader is shown to significantly improve thermal m