Zobrazeno 1 - 10
of 34
pro vyhledávání: '"A.C. Large"'
Autor:
Anne C. Tropper, A.C. Large, J.A. Sanz-García, E. Rodríguez, Jorge O. Tocho, Fernando Cussó, D.C. Hanna, L. Núñez
Publikováno v:
Scopus-Elsevier
The optical properties (absorption, luminescence and lifetime) of Tm3+-doped LiNbO3 and LiNbO3(MgO) have been measured. It has been found that the 1D2, 1G4, 3H4 and 3F4 levels decay radiatively having temperature-independent lifetimes. These results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7649c7165faefc4fcd2d9d98a771de5b
https://doi.org/10.1016/0022-2313(93)90020-n
https://doi.org/10.1016/0022-2313(93)90020-n
Autor:
A.C. Large, P.D. Townsend, P.J. Chandler, D.C. Hanna, David Shepherd, J.K. Jones, Lin Zhang, Anne C. Tropper, M.J. Rodman
Publikováno v:
Optics Communications. 99:211-215
The first laser operation of an Yb:YAG waveguide is reported. Room temperature, continuous wave operation was achieved at a threshold of 30 mW. Projected thresholds of a few milliwatts for a channel waveguide indicate that for quasi-three level laser
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a78ee2be9823798a1b321ba66291ea7
https://doi.org/10.1016/0030-4018(93)90081-f
https://doi.org/10.1016/0030-4018(93)90081-f
Autor:
J.K. Jones, Anne C. Tropper, M. Hempstead, David Shepherd, James S. Wilkinson, A.C. Large, J.P. de Sandro
Publikováno v:
Optics letters. 20(13)
We report laser action in a Ti-diffused LiNbO(3) waveguide doped with trivalent Yb ions by thermal indiffusion. Lasing was observed at 1008, 1030, and 1060 nm with thresholds as low as 15-mW launched pump power. We reduced photorefractivity, which in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78466d0a1c786460f3af8034d63b3097
https://pubmed.ncbi.nlm.nih.gov/19862054
https://pubmed.ncbi.nlm.nih.gov/19862054
Autor:
I. Chartier, Anne C. Tropper, D. Pelenc, David Shepherd, A.C. Large, Bernard Ferrand, D.C. Hanna
Publikováno v:
Applied Physics Letters. 63:7-9
We report the 946 nm laser operation of an epitaxially grown Nd:YAG planar waveguide. The incident and absorbed power thresholds of 4 and 1.2 mW, respectively, are lower than those reported for bulk lasers when using a similar experimental setup. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53183546740a85ef1abbfcea75315611
https://doi.org/10.1063/1.109703
https://doi.org/10.1063/1.109703
Autor:
A.C. Large, B. Chambaz, D.C. Hanna, D. Pelenc, I. Chartier, Bernard Ferrand, Christophe Wyon, Anne C. Tropper, David Shepherd
We report the 1.03µm and 1.05µm laser operation of a diode-pumped Yb-doped YAG planar waveguide. The fabrication and characterisation of such multilayer planar waveguides by liquid phase epitaxy are also described. Diode-pumped laser results (77% s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4862488a71fe3065febfa05e2994a34a
https://eprints.soton.ac.uk/78432/
https://eprints.soton.ac.uk/78432/
Autor:
A.C. Large, D.C. Hanna, D.P. Shepherd, A.C. Tropper, T.J. Warburton, C. Borrel, B. Ferrand, A. Rameix, P. Thony, F. Auzel, D. Meichenin
Publikováno v:
1994 Conference on Lasers and Electro-Optics Europe.
Er3+-doped Y3A15012 (YAG) is an interesting system with several useful laser transitions. Laser operation has previously been demonstrated on the 1.6 μm, 2.94 μm, and 561 nm shown in the level diagram of Fig. 1.1–3 Co-doping with Yb3+ allows thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::288617dc6940e061368f2c60d26b3e8a
https://doi.org/10.1364/cleo_europe.1994.cmf4
https://doi.org/10.1364/cleo_europe.1994.cmf4
Autor:
Q. Hu, P.J. Chandler, D.C. Hanna, A.C. Large, J.R. Lincoln, S.J. Field, A.C. Trooper, P.D. Townsend, David Shepherd, William S. Brocklesby, Lin Zhang, Xiqi Feng
We report the first observation of optically written channel waveguides in ion implanted Bi4Ge3O12 (BGO). Raman spectroscopy has been used to investigate the changes occurring due to both the original ion implantation and the subsequent optical writi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2b63d1ebba63b9670f0135161341c2c
https://eprints.soton.ac.uk/78526/
https://eprints.soton.ac.uk/78526/
Autor:
S.J. Field, D. C. Hanna, David Shepherd, P.J. Chandler, Lin Zhang, A.C. Large, P.D. Townsend, Anne C. Tropper
We report what is to our knowledge the first fabrication and laser operation of ion-implanted Nd:GGG channel waveguides. Diode-pumped operation has been achieved with absorbed power thresholds as low as ~2 mW and a slope efficiency of ~30% with respe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ad90760fcc5928c261f3866df5a978e
https://eprints.soton.ac.uk/78543/
https://eprints.soton.ac.uk/78543/
Autor:
Lin Zhang, D.C. Hanna, Anne C. Tropper, P.J. Chandler, S.J. Field, David Shepherd, A.C. Large, P.D. Townsend
Publikováno v:
Integrated Photonics Research.
Ion implantation is a technique which can be used to form waveguides in a wide range of materials - including crystals of the garnet family for which no alternative techniques exist - by bombarding the material surface with high energy ions and alter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4acc438963742ebc742b4d55a918a0ab
https://doi.org/10.1364/ipr.1992.wf6
https://doi.org/10.1364/ipr.1992.wf6
Autor:
David Shepherd, D. C. Hanna, A.C. Large, D. Pelenc, Anne C. Tropper, I. Chartier, Bernard Ferrand
We report the first operation of a side-pumped crystal waveguide laser. Both diode array and dye laser side-pumping of an epitaxially grown Nd:YAG planar waveguide laser have been demonstrated, with thresholds as low as 8 mW observed for a simple pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0b3918fcb88180cfae318a13c69d448
https://eprints.soton.ac.uk/78529/
https://eprints.soton.ac.uk/78529/