Thermally induced local gain suppression in vertical-cavity surface-emitting lasers

Joule heating is one of the dominant mechanisms determining the transverse mode formation in vertical-cavity surface-emitting lasers at high injection currents. We give experimental evidence that in this operation regime, strong heating results in local gain suppression in the center of the laser, which overbalances the confining effect of thermal lensing, and thus favors the formation of high order modes. From our investigations of small aperture devices, we conclude that efficient heat removal is crucial for achieving single mode emission at high injection currents.

[1]  Rainer Michalzik,et al.  4.8 mW singlemode oxide confined top-surface emitting vertical-cavity laser diodes , 1997 .

[2]  Henryk Temkin,et al.  Vertical-cavity surface-emitting lasers : design, fabrication, characterization, and applications , 2001 .

[3]  K. H. Hahn,et al.  Measurement of guiding effects in vertical-cavity surface-emitting lasers , 1996, IEEE Photonics Technology Letters.

[4]  D. M. Kuchta,et al.  Spatial hole burning and self‐focusing in vertical‐cavity surface‐emitting laser diodes , 1994 .

[5]  Ingo Fischer,et al.  Transverse modes in oxide confined VCSELs: Influence of pump profile, spatial hole burning, and thermal effects. , 1999, Optics express.

[6]  M. Ilegems,et al.  Thermal lensing effects in small oxide confined vertical-cavity surface-emitting lasers , 2000 .

[7]  Robert A. Morgan,et al.  Transverse modes and patterns of electrically pumped vertical-cavity surface-emitting semiconductor lasers , 1994 .

[8]  J. P. Harbison,et al.  Dynamic, polarization, and transverse mode characteristics of vertical cavity surface emitting lasers , 1991 .

[9]  Karl Joachim Ebeling,et al.  Spectrally resolved near‐field mode imaging of vertical cavity semiconductor lasers , 1996 .

[10]  Guillaume Huyet,et al.  Transverse Mode Structure and Pattern Formation in Oxide Confined Vertical Cavity Semiconductor Lasers , 1999 .

[11]  John G. McInerney,et al.  Transverse-mode control of vertical-cavity surface-emitting lasers , 1996 .

[12]  Hans W. Lehmann,et al.  Mode behavior and high resolution spectra of circularly‐symmetric GaAs‐AlGaAs air‐post vertical cavity surface emitting lasers , 1996 .

[13]  Schneider,et al.  Thermionic emission and Gaussian transport of holes in a GaAs/AlxGa1-xAs multiple-quantum-well structure. , 1988, Physical review. B, Condensed matter.

[14]  N. Dutta,et al.  Anomalous temporal response of gain guided surface emitting lasers , 1991 .

[15]  Robert P. Sarzała,et al.  Transverse modes in gain-guided vertical-cavity surface-emitting lasers , 1998 .

[16]  Karl Joachim Ebeling,et al.  Amplitude noise squeezed light from polarisation singlemode VCSEL , 1998 .