High-coupling-efficient 1.3-μm laser diodes with good temperature characteristics

Hideki Fukano, Kiyoyuki Yokoyama, Yoshiaki Kadota, Yasuhiro Kondo, Mineo Ueki, Junichi Yoshida

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We have proposed uniformly beam-expanded structures based on the advanced concept for realizing high coupling efficiency and good temperature characteristics. Beam expansion (optical confinement reduction) by narrowing the core layer width as well as a carrier confinement are strongly enhanced by adopting a larger bandgap InGaAsP for MQW barriers and separate confinement heterostructure layers. These laser diodes (LD's) were fabricated by the conventional buried heterostructure laser process, which is very important in reducing the cost. Our results have proven the effectiveness of our proposition. The LD's with high coupling efficiency (-3.2 dB) and good temperature characteristics have been achieved even using the simple approach of reducing optical confinement. The threshold currents at 25 and 85 °C are 9.3 and 39.4 mA, respectively. The slope efficiency at 25 °C is 0.39 W/A and still high (0.26 W/A) even at 85 °C.

Original languageEnglish
Pages (from-to)1959-1963
Number of pages5
JournalIEEE Journal of Quantum Electronics
Volume32
Issue number11
DOIs
Publication statusPublished - Nov 1996
Externally publishedYes

Fingerprint

Semiconductor lasers
semiconductor lasers
Heterojunctions
Temperature
temperature
Energy gap
threshold currents
Lasers
slopes
costs
expansion
Costs
lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

High-coupling-efficient 1.3-μm laser diodes with good temperature characteristics. / Fukano, Hideki; Yokoyama, Kiyoyuki; Kadota, Yoshiaki; Kondo, Yasuhiro; Ueki, Mineo; Yoshida, Junichi.

In: IEEE Journal of Quantum Electronics, Vol. 32, No. 11, 11.1996, p. 1959-1963.

Research output: Contribution to journalArticle

Fukano, Hideki ; Yokoyama, Kiyoyuki ; Kadota, Yoshiaki ; Kondo, Yasuhiro ; Ueki, Mineo ; Yoshida, Junichi. / High-coupling-efficient 1.3-μm laser diodes with good temperature characteristics. In: IEEE Journal of Quantum Electronics. 1996 ; Vol. 32, No. 11. pp. 1959-1963.
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