A semiconductor laser having a single transverse mode operation. Optical power higher than that generated by conventional pump lasers is achieved by widening the gain medium without inducing the second transverse mode. This is accomplished by providing a small refractive index difference between active...http://www.google.com.au/patents/US6432735?utm_source=gb-gplus-sharePatent US6432735 - High power single mode laser and method of fabrication
