Title :
Thermal lensing in high-power ridge-waveguide lasers
Author :
Wenzel, Hans ; Dallmer, M. ; Erbert, G.
Author_Institution :
Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin
Abstract :
The lateral farfield characteristics of ridge- waveguide (RW) lasers emitting around 1064 nm an output power of 1.3 W at an injection current of 2 A were measured and modeled. Due to trenches with widths between 2.5 and 20 mum defining the narrow RW, radiation leaks out into the outer regions which suppresses higher-order modes, but which can also lead to a double-peaked lateral farfield of the fundamental mode. A simple model taking into account the thermal lensing effect explains well the lateral farfield behavior observed.
Keywords :
laser modes; quantum well lasers; thermal lensing; waveguide lasers; current 2 A; double quantum well structure laser; double-peaked lateral farfield; fundamental mode; high-power lasers; higher-order mode suppression; lateral farfield characteristics; power 1.3 W; radiation leaks; ridge waveguide lasers; size 2.5 mum to 20 mum; thermal lensing; wavelength 1064 nm; Current measurement; Laser modes; Lasers and electrooptics; Optical fiber communication; Optical propagation; Optical waveguides; Power generation; Power lasers; Thermal lensing; Waveguide lasers;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2007. NUSOD '07. International Conference on
Conference_Location :
Newark, DE
Print_ISBN :
978-1-4244-1431-4
DOI :
10.1109/NUSOD.2007.4349000
