Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Richard H. Abram"'
Autor:
J.S. Roberts, Stephen J. McGinily, Kyle S. Gardner, Richard H. Abram, Erling Riis, Allister I. Ferguson
Publikováno v:
IEEE Journal of Quantum Electronics. 43:445-450
We report on a novel material developed as the gain medium for a vertical-external-cavity surface-emitting laser (VECSEL) operating around 850 nm. The new material departs from the conventional approach of using GaAs as the quantum-well (QW) material
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b967bf68386991646145c30d23135c65
https://doi.org/10.1109/jqe.2007.895666
https://doi.org/10.1109/jqe.2007.895666
Autor:
Marc Schmid, Allister I. Ferguson, Sarah Benchabane, Firuz Torabi-Goudarzi, Richard H. Abram, Erling Riis
Publikováno v:
Applied Physics Letters. 84:4860-4862
A scheme is demonstrated for optical pumping of a vertical-external-cavity surface-emitting laser. The scheme is based on absorption of the pump light within the wells of the multiple-quantum-well gain structure rather than the conventional approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c96717fc55ab6ef900a4f96e4b692b6e
https://doi.org/10.1063/1.1760887
https://doi.org/10.1063/1.1760887
Autor:
Erling Riis, Jennifer E. Hastie, John-Mark Hopkins, C.W. Jeon, Martin D. Dawson, Stephane Calvez, Allister I. Ferguson, Richard H. Abram, David Burns
Publikováno v:
IEEE Photonics Technology Letters. 15:894-896
We report the power scaling of a diode-pumped GaAs-based 850-nm vertical external-cavity surface-emitting laser, by use of an intracavity silicon carbide (SiC) heatspreader optically contacted to the semiconductor surface. To our knowledge, this is t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53ad3d2efd641c6cc80fbd231c85eea4
https://doi.org/10.1109/lpt.2003.813446
https://doi.org/10.1109/lpt.2003.813446
Publikováno v:
Optics express. 12(11)
A novel technique is demonstrated for stabilizing an intra-cavity etalon used for single-mode selection in a laser cavity. By appropriate polarization analysis of the reflection from an etalon designed as a quarterwave plate an electronic signal can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bc8a1aed55fd82b1f793814e789b580
https://pubmed.ncbi.nlm.nih.gov/19475072
https://pubmed.ncbi.nlm.nih.gov/19475072
Autor:
Jennifer E. Hastie, C.W. Jeon, John-Mark Hopkins, Erling Riis, Allister I. Ferguson, W. J. Alford, Stephane Calvez, Richard H. Abram, T. D. Raymond, Martin D. Dawson, Andrew A. Allerman, David Burns
Publikováno v:
The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003. LEOS 2003..
In this paper we have demonstrated monolithic "microchip" vertical external-cavity surface-emitting lasers (VECSEL), in which a cavity is formed between the VECSEL semiconductor back mirror and a dielectric mirror coating on the outer surface of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3aaab9a6e685d873ec205890f8b194ce
https://doi.org/10.1109/leos.2003.1252896
https://doi.org/10.1109/leos.2003.1252896
Autor:
Stephane Calvez, Allister I. Ferguson, Jennifer E. Hastie, John-Mark Hopkins, Martin D. Dawson, Richard H. Abram, C.W. Jeon, David Burns, Erling Riis
Publikováno v:
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666).
In this paper, we demonstrate that highly advantageous thermal management properties of the SiC heatspreader are wholly compatible with direct diode pumping. We investigate the transverse and longitudinal mode behaviour of the high-power vertical ext
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd40cf226149dce3a807a2862ecfd0d1
https://doi.org/10.1109/cleoe.2003.1312193
https://doi.org/10.1109/cleoe.2003.1312193
Publikováno v:
Laser Spectroscopy.
We report the CW performance of two broadly tuneable, optically pumped VECSEL gain structures operating around 850 nm and 960 nm. We have achieved 0.75W at 852 nm in diffraction limited TEM00 mode. A tuning range in excess of 30 nm has been demonstra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f692721ea4e7ec95a9ed28fd9962e7a
https://doi.org/10.1142/9789812703002_0055
https://doi.org/10.1142/9789812703002_0055
Autor:
Andrea Balocchi, Martin D. Dawson, Richard J. Warburton, H.-J. Kutschera, Richard H. Abram, K. Karrai, Erling Riis, Stephane Calvez, Allister I. Ferguson
Publikováno v:
The 15th Annual Meeting of the IEEE Lasers and Electro-Optics Society.
The possibility of wavelength tuning and insertion of intra-cavity control elements makes vertical external cavity surface emitting lasers (VECSEL) a useful tool for telecommunication and spectroscopic applications. Very small cavity lengths are desi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b04d3cc01475c553817246891a102c74
https://doi.org/10.1109/leos.2002.1159492
https://doi.org/10.1109/leos.2002.1159492
Autor:
David Burns, Richard H. Abram, John-Mark Hopkins, Stephane Calvez, C.W. Jeon, Martin D. Dawson, Jennifer E. Hastie
Publikováno v:
International Conference on Lasers, Applications, and Technologies 2002: Advanced Lasers and Systems.
High thermal conductivity intra-cavity crystalline heatspreaders are used to control the pump-induced temperature increase limiting the power scaling of vertical external-cavity surface-emitting lasers (VECSELs). Pump-power-limited output of greater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70dfedfeb0281db52ebc5dedc44b5089
https://doi.org/10.1117/12.517987
https://doi.org/10.1117/12.517987
Publikováno v:
Review of Scientific Instruments. 77:116101
A high brightness, fiber coupled optical pumping system is described based on readily available optical components. Operating at a wavelength of 670nm we have achieved an output of 1.25W from a 50μm core diameter fiber (0.22 NA) and 3.5W from a 100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::422abea4f4a2e89b2fa56c50022913e5
https://doi.org/10.1063/1.2364150
https://doi.org/10.1063/1.2364150