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Proceedings Paper

Designing of possible structures of nitride vertical-cavity surface-emitting lasers
Author(s): Pawel Mackowiak; T. Czyszanowski; Robert P. Sarzala; M. Wasiak; Wlodzimierz Nakwaski
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Paper Abstract

Performance of various possible designs of 400-nm nitride vertical-cavity surface-emitting lasers (VCSELs) has been analysed with the aid of the advanced three-dimensional (3D) thermal-electrical-optical-gain self-consistent threshold simulation. It has been demonstrated that it is practically impossible to reach the fundamental-mode operation in nitride VCSELs of the traditional design with two ring contacts. To enhance this desired operation, uniformity of current injection into VCSEL active regions should be dramatically improved. Therefore, we focused our research on designs with tunnel junctions and/or a semitransparent contact. In particular, it has been proved that the design with two cascading active regions, two tunnel junctions and a semitransparent contact may offer the most promising room-temperature performance characteristics for both pulse and continuous-wave operation. In particular, this design offers high mode selectivity with distinct fundamental transverse mode domination. Our simulations reveal, that the thickness and localization of a semitransparent contact as well as localization of active regions and tunnel junctions are crucial for a successful construction designing.

Paper Details

Date Published: 22 October 2003
PDF: 10 pages
Proc. SPIE 5136, Solid State Crystals 2002: Crystalline Materials for Optoelectronics, (22 October 2003); doi: 10.1117/12.519746
Show Author Affiliations
Pawel Mackowiak, Technical Univ. of Lodz (Poland)
T. Czyszanowski, Technical Univ. of Lodz (Poland)
Robert P. Sarzala, Technical Univ. of Lodz (Poland)
M. Wasiak, Technical Univ. of Lodz (Poland)
Wlodzimierz Nakwaski, Technical Univ. of Lodz (Poland)


Published in SPIE Proceedings Vol. 5136:
Solid State Crystals 2002: Crystalline Materials for Optoelectronics
Jaroslaw Rutkowski; Antoni Rogalski, Editor(s)

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