The University of Southampton
University of Southampton Institutional Repository

High power diode-pumped Nd3+ fibre laser

High power diode-pumped Nd3+ fibre laser
High power diode-pumped Nd3+ fibre laser
In the medical field high power fibre-coupled AlGaAs diode lasers operating around 800nm are already making an impact in surgery but for more specialised applications high powers at other wavelengths are required. It is an attractive idea to develop active fibres as add-ons to such fibre coupled diode systems increasing the range of applications of such devices at little extra cost and minimal additional complexity. Rare-earth-doped optical fibres exhibit the traditional advantages of a glass laser host of broad emission and absorption spectra but without the usual associated thermal problems. With fibre lasers wavelength selection and temperature stabilisation of the pump diode is unnecessary, and the emission spectra allows for broad tuning. Double-clad fibres comprising a doped core, usually single-moded located within a large multimode waveguide enable efficient pumping of fibre lasers with diode ways or diode bars. Fibre lasers can thus be considered as simple wavelength convertors and brightness enhancers for the high power but poorly specified output of diode sources.
In the this paper we describe a multiwatt Nd3+ fibre laser pumped via a second cladding by the DIOMED 25 laser diode unit. This multi diode array source is designed for coupling up to 25 Watts of diode power into a plastic-clad silica fibre of 400µm diameter. The laser fibre which is a double-clad structure fabricated from lead-silicate glasses is interchangeable with the normal PCS delivery fibre. The device operates at 1.058µm with a slope efficiency >50% and a 150 times brightness enhancement. This laser though useful in itself is also a key intermediate laser for generation of high powers at other wavelengths. Tandem pumping of Tm3+ and Er3+/Yb3+ fibre lasers at 1.058µm enables efficient generation of 2.0µm and 1.55µm radiation respectively. In addition the Nd3+ laser can be operated close to 1.3µm and there are prospects for in-fibre frequency doubling of the 1.06µm line to generate a high power source in the green.
Minelly, J.D.
5f4c7b1a-99ee-4746-9e3c-4cb420615c50
Jedrzejewski, K.P.
c1dbf6fd-ee1f-4225-a6fa-fdfda93718ee
Taylor, E.R.
d9a73a87-6abd-4a1e-a462-84549c667d19
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Raven, A.
6f44edbb-33e5-42c3-8002-3aa2e88898d5
Mannannon, I.
d0ef0b4d-a7e6-4d7d-ad58-4ac55e19796f
Fernie, D.
17403c2c-a7b5-4cf4-a39f-7881e72ea7ba
Minelly, J.D.
5f4c7b1a-99ee-4746-9e3c-4cb420615c50
Jedrzejewski, K.P.
c1dbf6fd-ee1f-4225-a6fa-fdfda93718ee
Taylor, E.R.
d9a73a87-6abd-4a1e-a462-84549c667d19
Wang, J.
53d8d8bd-3c17-406e-9acf-961cc86b9a00
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Raven, A.
6f44edbb-33e5-42c3-8002-3aa2e88898d5
Mannannon, I.
d0ef0b4d-a7e6-4d7d-ad58-4ac55e19796f
Fernie, D.
17403c2c-a7b5-4cf4-a39f-7881e72ea7ba

Minelly, J.D., Jedrzejewski, K.P., Taylor, E.R., Wang, J., Payne, D.N., Raven, A., Mannannon, I. and Fernie, D. (1994) High power diode-pumped Nd3+ fibre laser. SPIE Conference on Medical Lasers and Systems I, Los Angeles, United States.

Record type: Conference or Workshop Item (Paper)

Abstract

In the medical field high power fibre-coupled AlGaAs diode lasers operating around 800nm are already making an impact in surgery but for more specialised applications high powers at other wavelengths are required. It is an attractive idea to develop active fibres as add-ons to such fibre coupled diode systems increasing the range of applications of such devices at little extra cost and minimal additional complexity. Rare-earth-doped optical fibres exhibit the traditional advantages of a glass laser host of broad emission and absorption spectra but without the usual associated thermal problems. With fibre lasers wavelength selection and temperature stabilisation of the pump diode is unnecessary, and the emission spectra allows for broad tuning. Double-clad fibres comprising a doped core, usually single-moded located within a large multimode waveguide enable efficient pumping of fibre lasers with diode ways or diode bars. Fibre lasers can thus be considered as simple wavelength convertors and brightness enhancers for the high power but poorly specified output of diode sources.
In the this paper we describe a multiwatt Nd3+ fibre laser pumped via a second cladding by the DIOMED 25 laser diode unit. This multi diode array source is designed for coupling up to 25 Watts of diode power into a plastic-clad silica fibre of 400µm diameter. The laser fibre which is a double-clad structure fabricated from lead-silicate glasses is interchangeable with the normal PCS delivery fibre. The device operates at 1.058µm with a slope efficiency >50% and a 150 times brightness enhancement. This laser though useful in itself is also a key intermediate laser for generation of high powers at other wavelengths. Tandem pumping of Tm3+ and Er3+/Yb3+ fibre lasers at 1.058µm enables efficient generation of 2.0µm and 1.55µm radiation respectively. In addition the Nd3+ laser can be operated close to 1.3µm and there are prospects for in-fibre frequency doubling of the 1.06µm line to generate a high power source in the green.

Text
777.pdf - Accepted Manuscript
Download (103kB)

More information

Published date: January 1994
Venue - Dates: SPIE Conference on Medical Lasers and Systems I, Los Angeles, United States, 1994-01-01

Identifiers

Local EPrints ID: 77164
URI: http://eprints.soton.ac.uk/id/eprint/77164
PURE UUID: 6fc4a5b1-22d2-419b-9aef-a09835958b20

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:45

Export record

Contributors

Author: J.D. Minelly
Author: K.P. Jedrzejewski
Author: E.R. Taylor
Author: J. Wang
Author: D.N. Payne
Author: A. Raven
Author: I. Mannannon
Author: D. Fernie

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×