IR lasers optimised for high-temperature operation in frequency-doubled green module for mobile laser projection

• Published in: 2010 High Power Diode Lasers & Systems Conference pp. 1 - 2
• Main Authors: Swietlik, T., Lindberg, H., Pietzonka, I., Kuhnelt, M., Lauer, C., Gronninger, G., Schwarz, T., Furitsch, M., Schulz, R., Hofer, T., Strauss, U.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-11-2010
• Subjects: Reliability
• ISBN: 1424486998; 9781424486991
• ISSN: 2379-0385; 2379-0393
• DOI: 10.1109/HPD.2010.6024193

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.