Title :
IR lasers optimised for high-temperature operation in frequency-doubled green module for mobile laser projection
Author :
Swietlik, T. ; Lindberg, H. ; Pietzonka, Ines ; Kuhnelt, M. ; Lauer, C. ; Gronninger, G. ; Schwarz, T. ; Furitsch, M. ; Schulz, Renee ; Hofer, T. ; Strauss, U.
Author_Institution :
OSRAM Opto Semicond. GmbH, Regensburg, Germany
Abstract :
The above presented data of a green laser module regarding output power of 100mW based on an 850nm pump laser, 1060nm VECSEL and intra-cavity second-harmonic generation prove an excellent performance of the whole module with the overall WPE of as high as 10% at 40°C. It is the highest value of all cutting edge technologies enabling green lasing achieved up to date with capability of high-speed modulation in MHz range. Reliability and WPE of a pump die at high temperatures are of crucial importance for this kind of device. We demonstrate reliable operation up to 90°C junction temperature of the pumping IR laser diode at current density of 1.4kA/cm2, which is also used as a single emitter delivering 0.5-1W output power after being mounted in TO-can under the same junction temperature and current load.
Keywords :
current density; laser cavity resonators; laser reliability; optical harmonic generation; optical modulation; optical projectors; optical pumping; semiconductor lasers; surface emitting lasers; IR laser diode; IR laser optimisation; VECSEL; current density; frequency-doubled green module; green lasing; high temperature effects; high-speed modulation; high-temperature operation; intracavity second-harmonic generation; junction temperature; laser output power; laser reliability; mobile laser projection; power 0.5 W to 1 W; power 100 mW; single emitter; temperature 40 degC; wall-plug efficiency; wavelength 1060 nm; wavelength 850 nm; Reliability;
Conference_Titel :
High Power Diode Lasers and Systems Conference (HPD), 2010
Conference_Location :
Telford
Print_ISBN :
978-1-4244-8699-1
DOI :
10.1109/HPD.2010.6024193
