Abstract
We measured the cavity length dependence of the internal differential quantum efficiency ηint and the internal optical loss αint in 1500-nm-wavelength laser diodes (LDs). By evaluating αint directly from gain/absorption spectra for various injection current densities and measuring the external differential quantum efficiency ηext, we obtained the ηint and αint values of all the LDs with different cavity lengths. The obtained ηint and αint respectively showed strong and weak cavity length dependences, and were both very different from those derived by the widely used method of plotting ηext -1 against the cavity length.
| Original language | English |
|---|---|
| Pages (from-to) | 2288-2290 |
| Number of pages | 3 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 47 |
| Issue number | 4 PART 1 |
| DOIs | |
| Publication status | Published - 2008 Apr 18 |
| Externally published | Yes |
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Keywords
- External differential quantum efficiency
- Fabry-Pérot laser
- Gain spectrum
- GaInAsP/InP
- Internal differential quantum efficiency
- Internal optical loss
- Quantum wells
- Semiconductor laser
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Measurements of cavity-length-dependent internal differential quantum efficiency and internal optical loss in laser diodes. / Inada, Satoshi; Yoshita, Masahiro; Okano, Makoto; Ihara, Toshiyuki; Akiyama, Hidefumi; Zhang, Liming.
In: Japanese Journal of Applied Physics, Vol. 47, No. 4 PART 1, 18.04.2008, p. 2288-2290.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measurements of cavity-length-dependent internal differential quantum efficiency and internal optical loss in laser diodes
AU - Inada, Satoshi
AU - Yoshita, Masahiro
AU - Okano, Makoto
AU - Ihara, Toshiyuki
AU - Akiyama, Hidefumi
AU - Zhang, Liming
PY - 2008/4/18
Y1 - 2008/4/18
N2 - We measured the cavity length dependence of the internal differential quantum efficiency ηint and the internal optical loss αint in 1500-nm-wavelength laser diodes (LDs). By evaluating αint directly from gain/absorption spectra for various injection current densities and measuring the external differential quantum efficiency ηext, we obtained the ηint and αint values of all the LDs with different cavity lengths. The obtained ηint and αint respectively showed strong and weak cavity length dependences, and were both very different from those derived by the widely used method of plotting ηext -1 against the cavity length.
AB - We measured the cavity length dependence of the internal differential quantum efficiency ηint and the internal optical loss αint in 1500-nm-wavelength laser diodes (LDs). By evaluating αint directly from gain/absorption spectra for various injection current densities and measuring the external differential quantum efficiency ηext, we obtained the ηint and αint values of all the LDs with different cavity lengths. The obtained ηint and αint respectively showed strong and weak cavity length dependences, and were both very different from those derived by the widely used method of plotting ηext -1 against the cavity length.
KW - External differential quantum efficiency
KW - Fabry-Pérot laser
KW - Gain spectrum
KW - GaInAsP/InP
KW - Internal differential quantum efficiency
KW - Internal optical loss
KW - Quantum wells
KW - Semiconductor laser
UR - http://www.scopus.com/inward/record.url?scp=54249151427&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=54249151427&partnerID=8YFLogxK
U2 - 10.1143/JJAP.47.2288
DO - 10.1143/JJAP.47.2288
M3 - Article
AN - SCOPUS:54249151427
VL - 47
SP - 2288
EP - 2290
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 4 PART 1
ER -