Title :
Tapered laser arrays for high power operation (>1.4 WCW) at 1.59 μm for applications in surgery
Author :
Williams, P.J. ; Lewandowski, J.J. ; Robbins, D.J. ; Wood, A.K. ; Robson, F.O. ; Nayar, B.K.
Author_Institution :
GEC-Marconi Mater. Technol. Ltd., Towcester, UK
fDate :
5/14/1998 12:00:00 AM
Abstract :
The authors describe the fabrication and characterisation of high power, high brightness 1.59 μm semiconductor lasers for use in surgical applications either directly or as a pump for 2 μm wavelength Tm-doped fibre lasers. The lasers consist of a novel seven-element tapered waveguide array defined within a chip size of 1 mm×0.5 mm. CW output powers in excess of 1.4 W at 8 A drive current have been achieved and the devices operate with single lobed far field widths of 3.5-4.5° FWHM
Keywords :
laser applications in medicine; optical pumping; semiconductor laser arrays; surgery; 1.4 W; 1.59 micrometre; 8 A; CW output powers; brightness; chip size; drive current; high power operation; optical pump; single lobed far field widths; surgery; tapered laser arrays;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980704
