Polarization of eigenmodes in laser diode waveguides on semipolar and nonpolar GaN (pages 1–3)
Jens Rass, Tim Wernicke, Wolfgang G. Scheibenzuber, Ulrich T. Schwarz, Jan Kupec, Bernd Witzigmann, Patrick Vogt, Sven Einfeldt, Markus Weyers and Michael Kneissl
Article first published online: 20 OCT 2009 | DOI: 10.1002/pssr.200903325
In this paper studies of the gain anisotropy and the optical polarization of eigenmodes in waveguides on semipolar and nonpolar substrates are presented. Resonators along semipolar orientations show the highest gain with TE-polarized emission while resonators aligned along nonpolar directions have lower gain with a rotation of the optical polarization nearly parallel to the c-axis. This effect is caused by birefrigence and crystal anisotropy.