2026-04-22T21:57:45Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/217862025-02-13T07:15:52Zcom_10324_1158com_10324_931com_10324_894col_10324_1242

Souto Bartolomé, Jorge Manuel Pura Ruiz, José Luis Rodríguez, M. Anaya Calvo, Julián Torres, Alfredo Jiménez López, Juan Ignacio 2016-12-16T07:53:09Z 2016-12-16T07:53:09Z 2015 SPIE Proceedings, 2015, Vol. 9348, P. 9348O-1-7 Mark S. Zediker, Editor(s) 0277-786X http://uvadoc.uva.es/handle/10324/21786 10.1117/12.2079464 The catastrophic optical damage (COD) of laser diodes consists of the sudden drop off of the optical power. COD is generally associated with a thermal runaway mechanism in which the active zone of the laser is molten in a positive feedback process. The full sequence of the degradation follows different phases: in the first phase, a weak zone of the laser is incubated and the temperature is locally increased there; when a critical temperature is reached the thermal runaway process takes place. Usually, the positive feedback leading to COD is circumscribed to the sequential enhancement of the optical absorption in a process driven by the increase of the temperature. However, the meaning of the critical temperature has not been unambiguously established. Herein, we will discuss about the critical temperature, and the physical mechanisms involved in this process. The influence of the progressive deterioration of the thermal conductivity of the laser structure as a result of the degradation during the laser operation will be addressed. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International Laser diodes, Mechanisms driving the catastrophic optical damage in high power laser diodes info:eu-repo/semantics/article