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Proceedings Paper

High polarization purity operation of 99% in 9xx-nm broad stripe laser diodes
Author(s): Rintaro Morohashi; Yuji Yamagata; Yoshikazu Kaifuchi; Katsuhisa Tada; Ryozaburo Nogawa; Yumi Yamada; Masayuki Yamaguchi
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Paper Abstract

Polarization characteristics of self-aligned stripe (SAS) laser diodes (LDs) and Ridge-LDs are investigated to realize highly efficient polarization beam combined (PBC) LD modules. Vertical layers of both lasers are designed identically. Near field patterns (NFP) of TM polarization for the Ridge-LD showed peaks at the side edges, as expected by the strain simulation. On the other hand, SAS-LD showed a relatively flat and weak profile. Polarization purity (ITE/ (ITE+ITM)) of SAS-LDs exceeds 99%, while those of the Ridge-LDs are as low as 96%. It is confirmed that our SAS-LDs are suitable sources for PBC with low power loss.

Paper Details

Date Published: 19 February 2018
PDF: 6 pages
Proc. SPIE 10514, High-Power Diode Laser Technology XVI, 105140B (19 February 2018); doi: 10.1117/12.2288157
Show Author Affiliations
Rintaro Morohashi, Fujikura Ltd. (Japan)
Yuji Yamagata, OPTOENERGY Inc. (Japan)
Yoshikazu Kaifuchi, Fujikura Ltd. (Japan)
Katsuhisa Tada, OPTOENERGY Inc. (Japan)
Ryozaburo Nogawa, Fujikura Ltd. (Japan)
Yumi Yamada, OPTOENERGY Inc. (Japan)
Masayuki Yamaguchi, Fujikura Ltd. (Japan)

Published in SPIE Proceedings Vol. 10514:
High-Power Diode Laser Technology XVI
Mark S. Zediker, Editor(s)

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