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Double-clad structure and proximity coupling for diode-bar-pumped planar waveguide lasers

Double-clad structure and proximity coupling for diode-bar-pumped planar waveguide lasers
Double-clad structure and proximity coupling for diode-bar-pumped planar waveguide lasers
We report, for the first time, fabrication of double-clad planar waveguide structures and their use for multiwatt, diode-bar-pumped, planar waveguide lasers based on Nd3+ and Yb3+-doped YAG. The direct-bonded, five-layer structures of sapphire, YAG, and rare-earth-doped YAG have sufficient numerical aperture to capture the fast-axis divergence of a diode bar by proximity coupling with no intervening optics, leading to very simple and compact devices. The restriction of the doped region to the central core leads to diffraction-limited laser output in the guided direction. We also show that the direct-bonding fabrication process can lead to a linearly polarized output.
0018-9197
236-242
Bonner, C.L.
96e1b86d-6161-469a-b090-9aacf1e96c98
Bhutta, T.
6e32b59c-cd48-4454-9378-a7a8ab10d28e
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Tropper, A.C.
f3505426-e0d5-4e91-aed3-aecdb44b393c
Bonner, C.L.
96e1b86d-6161-469a-b090-9aacf1e96c98
Bhutta, T.
6e32b59c-cd48-4454-9378-a7a8ab10d28e
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Tropper, A.C.
f3505426-e0d5-4e91-aed3-aecdb44b393c

Bonner, C.L., Bhutta, T., Shepherd, D.P. and Tropper, A.C. (2000) Double-clad structure and proximity coupling for diode-bar-pumped planar waveguide lasers. IEEE Journal of Quantum Electronics, 36 (2), 236-242. (doi:10.1109/3.823470).

Record type: Article

Abstract

We report, for the first time, fabrication of double-clad planar waveguide structures and their use for multiwatt, diode-bar-pumped, planar waveguide lasers based on Nd3+ and Yb3+-doped YAG. The direct-bonded, five-layer structures of sapphire, YAG, and rare-earth-doped YAG have sufficient numerical aperture to capture the fast-axis divergence of a diode bar by proximity coupling with no intervening optics, leading to very simple and compact devices. The restriction of the doped region to the central core leads to diffraction-limited laser output in the guided direction. We also show that the direct-bonding fabrication process can lead to a linearly polarized output.

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Published date: 2000
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 13658
URI: https://eprints.soton.ac.uk/id/eprint/13658
ISSN: 0018-9197
PURE UUID: 268ab02d-a3b6-4d25-880c-6e2e52474ec6
ORCID for D.P. Shepherd: ORCID iD orcid.org/0000-0002-4561-8184

Catalogue record

Date deposited: 22 Dec 2004
Last modified: 06 Jun 2018 13:12

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Contributors

Author: C.L. Bonner
Author: T. Bhutta
Author: D.P. Shepherd ORCID iD
Author: A.C. Tropper

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