Zobrazeno 1 - 10
of 32
pro vyhledávání: '"J.P. de Sandro"'
Publikováno v:
Optical Materials. 11:143-151
We describe the fabrication, characterisation and possible applications of a new type of optical material – a 2-dimensional photonic crystal made of silica and air. This macroporous silica, which is made using the technology of optical fibre fabric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ac64de81243534d3985fcdf9e1d0cde
https://doi.org/10.1016/s0925-3467(98)00040-8
https://doi.org/10.1016/s0925-3467(98)00040-8
Autor:
A. Chevy, J.P. de Sandro
Publikováno v:
Journal of Crystal Growth. 144:65-69
Growth of high quality AgGaSe 2 single crystals has been achieved in a specially designed novel graphite crucible. As fabrication and use a specific crucible are necessary for AgGaSe 2 growth, the designed graphite crucible simplifies significantly t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::979a28d6c2e7aa5ab1e2dd0ac2c43e70
https://doi.org/10.1016/0022-0248(94)90011-6
https://doi.org/10.1016/0022-0248(94)90011-6
Autor:
W.H. Loh, J.P. de Sandro
Publikováno v:
Optics letters. 21(18)
Experimental results are presented showing that resonant pumping can significantly improve the stability of erbium-doped fiber lasers. In particular, it is observed that an erbium fiber laser that exhibits sustained spiking behavior when pumped at 98
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2341e40def58b647b2933a1575914496
https://pubmed.ncbi.nlm.nih.gov/19881696
https://pubmed.ncbi.nlm.nih.gov/19881696
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
Publikováno v:
Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics.
The absorption spectra of clustered and isolated ions in Er-doped fibers have been experimentally studied. The measured significant differences in the absorption characteristics between the two species has considerable implications for the design/ass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8475dfe526d3be31c5e65b7af94f0e31
https://doi.org/10.1109/cleopr.1997.610797
https://doi.org/10.1109/cleopr.1997.610797
Publikováno v:
IEEE Photonics Technology Letters. 8:209-211
We report laser operation at 1.81 /spl mu/m and 1.85 /spl mu/m in a Tm/sup 3+/:LiNbO/sub 3/ Ti-diffused waveguide doped by thermal indiffusion at high temperature. We believe this is the first time lasing has been seen in Tm:LiNbO/sub 3/ at room temp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::923609b14719c0e03b0e76b676a29003
https://doi.org/10.1109/68.484243
https://doi.org/10.1109/68.484243
Publikováno v:
Proceedings of Optical Fiber Communication Conference.
In summary, we have demonstrated a hybrid Er-doped fibre amplifier (EDFA) with a flat gain over a dynamic range of 15 dB, with a minimum of optical components. This results from careful choices of the spectra and lengths of the constituent Er-doped f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50688b60b20b7599287fe02473140a0a
https://doi.org/10.1109/ofc.1997.719753
https://doi.org/10.1109/ofc.1997.719753
Publikováno v:
Proceedings of Optical Fiber Communication Conference.
Single-frequency distributed feedback (DFB) and distributed Bragg reflector (DBR) Er/sup 3+/-fiber lasers are attractive for applications in optical communications and sensor systems. However, as the cavity lengths need to be short (a few cm) for rob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24dc330df3458394987b886d7932cd54
https://doi.org/10.1109/ofc.1997.719904
https://doi.org/10.1109/ofc.1997.719904
The authors report a peak gain of 1.2 dB/cm at 1535 nm in an erbium:lutecium codoped Al/P/Si fibre fabricated using a standard MCVD and solution doping technique. This is the highest gain per unit length ever reported for an erbium doped fibre amplif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b92cc42e04404da95a478099306785f
https://eprints.soton.ac.uk/77915/
https://eprints.soton.ac.uk/77915/
Autor:
M. Hempstead, J.K. Jones, Anne C. Tropper, J.P. de Sandro, David Shepherd, James S. Wilkinson
Publikováno v:
MRS Proceedings. 329
An X-cut LiNbO3 substrate has been doped with Yb3+ ions by thermal diffusion from an Yb metal film of thickness 7nm. Polarised absorption and fluorescence spectra of the dopant ion have been measured using Ti-diffused y-propagating channel waveguides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04307087ecf653b2f66c07ca0d81cde4
https://doi.org/10.1557/proc-329-233
https://doi.org/10.1557/proc-329-233