High-power Er:YAG laser with quasi-top-hat output beam
Kim, J. W., Mackenzie, J. I., Hayes, J. R. and Clarkson, W. A. (2012) High-power Er:YAG laser with quasi-top-hat output beam. Optics Letters, 37, (9), 1463-1465. (doi:10.1364/OL.37.001463).
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Description/Abstract
A simple method for simultaneously exciting the fundamental (TEM00) transverse mode and first order Laguerre-Gaussian (LG01) donut mode in an end-pumped solid-state laser to yield a quasi-top-hat output beam is reported. This approach has been applied to an Er:YAG laser, in-band pumped by an Er,Yb fiber laser, yielding 9.6 W of continuous-wave output at 1645 nm in a top-hat-like beam with beam propagation factor (M2) < 2.1 for 24 W of incident pump power at 1532 nm. The corresponding slope efficiency with respect to incident pump power was 49%. The prospects of further scaling of output power and improved overall efficiency are considered.
| Item Type: | Article |
|---|---|
| ISSNs: | 0146-9592 (print) 1539-4794 (electronic) |
| Related URLs: | |
| Keywords: | lasers, laser optics |
| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Physical and Applied Science > Optoelectronics Research Centre |
| Item ID: | 337572 |
| Date Deposited: | 30 Apr 2012 09:03 |
| Last Modified: | 26 Apr 2013 05:47 |
| Contributors: | Kim, J. W. (Author) Mackenzie, J. I. (Author) Hayes, J. R. (Author) Clarkson, W. A. (Author) |
| Date: | 24 April 2012 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/337572 |
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