Time resolved study of laser diode characteristics during pulsed operation

Abstract

Under pulsed operation, time dependent spectral and electro-optical measurements on GaN-based laser diodes show a considerable red shift in the emission wavelength and a decreasing voltage drop across the device. These changes appear on a rather short time scale in the microsecond range. During a 3.7 microsecond long pulse, a temperature increase of approximately 50 K is obtained using different experimental methods. This value agrees well with numerical simulations based on the thermal properties of the material. (© 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)