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Laser operation of a low loss (0.1dB/cm) Nd:Gd3Ga5O12 thick (40 micron) planar waveguide grown by pulsed laser deposition

Laser operation of a low loss (0.1dB/cm) Nd:Gd3Ga5O12 thick (40 micron) planar waveguide grown by pulsed laser deposition
Laser operation of a low loss (0.1dB/cm) Nd:Gd3Ga5O12 thick (40 micron) planar waveguide grown by pulsed laser deposition
Waveguiding films of Nd:Gd3Ga5O12 with a thickness up to 40 m have been fabricated by pulsed-laser deposition on Y3Al5O12 (1 0 0) substrates. A laser threshold of 18 mW of absorbed pump power has been obtained and lasing action has been observed at 1060.6 nm for pump powers close to the lasing threshold, and at both 1059.0 and 1060.6 nm at pump power levels of approximately 1.5 times above threshold. Waveguide propagation losses of 0.1 dB/cm have been obtained by measuring the absorbed pump power threshold for laser operation at 1060.6 nm for a range of output couplers with various reflectivities. Slope efficiencies of 12.3% and 17.5% were derived using output couplers with a transmission of 2.2% and 4.5%, respectively. The combination of low propagation losses and high numerical aperture for the waveguides indicates the potential of the fabrication technique to produce high quality thick multi-layer waveguides. Such designs are suitable for the development of high-power diode-pumped laser sources of near-diffraction-limited beam quality.
Laser materials, Lasers, Waveguides, Optical waveguides, Laser deposition
0030-4018
355-361
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
May-Smith, T.C.
47952bbd-ce28-4507-a723-b4d80bf0f809
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
May-Smith, T.C.
47952bbd-ce28-4507-a723-b4d80bf0f809
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Eason, R.W.
e38684c3-d18c-41b9-a4aa-def67283b020

Grivas, C., May-Smith, T.C., Shepherd, D.P. and Eason, R.W. (2004) Laser operation of a low loss (0.1dB/cm) Nd:Gd3Ga5O12 thick (40 micron) planar waveguide grown by pulsed laser deposition. Optics Communications, 229 (1-6), 355-361. (doi:10.1016/j.optcom.2003.11.039).

Record type: Article

Abstract

Waveguiding films of Nd:Gd3Ga5O12 with a thickness up to 40 m have been fabricated by pulsed-laser deposition on Y3Al5O12 (1 0 0) substrates. A laser threshold of 18 mW of absorbed pump power has been obtained and lasing action has been observed at 1060.6 nm for pump powers close to the lasing threshold, and at both 1059.0 and 1060.6 nm at pump power levels of approximately 1.5 times above threshold. Waveguide propagation losses of 0.1 dB/cm have been obtained by measuring the absorbed pump power threshold for laser operation at 1060.6 nm for a range of output couplers with various reflectivities. Slope efficiencies of 12.3% and 17.5% were derived using output couplers with a transmission of 2.2% and 4.5%, respectively. The combination of low propagation losses and high numerical aperture for the waveguides indicates the potential of the fabrication technique to produce high quality thick multi-layer waveguides. Such designs are suitable for the development of high-power diode-pumped laser sources of near-diffraction-limited beam quality.

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More information

Published date: 2004
Keywords: Laser materials, Lasers, Waveguides, Optical waveguides, Laser deposition

Identifiers

Local EPrints ID: 13946
URI: http://eprints.soton.ac.uk/id/eprint/13946
ISSN: 0030-4018
PURE UUID: 5d771856-0e67-4a77-b1ae-75c09710b663
ORCID for D.P. Shepherd: ORCID iD orcid.org/0000-0002-4561-8184
ORCID for R.W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 22 Dec 2004
Last modified: 18 Feb 2021 16:37

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Contributors

Author: C. Grivas
Author: T.C. May-Smith
Author: D.P. Shepherd ORCID iD
Author: R.W. Eason ORCID iD

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