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- Publications
- Influence
Surface emitting semiconductor lasers
- K. Iga, F. Koyama, S. Kinoshita
- Materials Science
- 1 September 1988
A description is given of the research progress in developing a vertical-cavity surface-emitting (SE) injection laser based on GaAlAs/GaAs and GaInAsP/InP systems. Ultimate laser characteristics,… Expand
Frequency chirping in external modulators
A general formula is given that expresses frequency chirping in some types of external intensity modulators, such as the loss modulator, directional-coupler-type modulator, Mach-Zehnder… Expand
Recent Advances of VCSEL Photonics
- F. Koyama
- 2006
A vertical-cavity surface emitting laser (VCSEL) was invented 30 years ago. A lot of unique features can be expected, such as low-power consumption, wafer-level testing, small packaging capability,… Expand
Lasing Characteristics of Low-Threshold GaInNAs Lasers Grown by Metalorganic Chemical Vapor Deposition : Optics and Quantum Electronics
- M. Kawaguchi, T. Miyamoto, +4 authors K. Iga
- Physics
- 15 July 2001
We report on the lasing characteristics of low-threshold long-wavelength GaInNAs double quantum well (DQW) lasers grown by metalorganic chemical vapor deposition (MOCVD). We have achieved a threshold… Expand
Polarization control of vertical-cavity surface emitting lasers using a birefringent metal/dielectric polarizer loaded on top distributed Bragg reflector
- T. Mukaihara, N. Ohnoki, Y. Hayashi, N. Hatori, F. Koyama, K. Iga
- Materials Science
- 1 June 1995
A novel polarization control method using a birefringent metal/dielectric (semiconductor) polarizer has been proposed for the purpose of controlling the polarization state of vertical-cavity… Expand
Analysis of dynamic spectral width of dynamic-single-mode (DSM) lasers and related transmission bandwidth of single-mode fibers
- F. Koyama, Y. Suematsu
- Materials Science
- IEEE Journal of Quantum Electronics
- 1 April 1985
A simple formula of the dynamic spectral width of a directly modulated dynamic-single-mode (DSM) laser, and the related maximum transmission bandwidth of a single-mode fiber limited by chromatic… Expand
Continuous wave operation of 1.26 [micro sign]m GaInNAs/GaAs vertical-cavity surface-emitting lasers grown by metalorganic chemical vapour deposition
- S. Sato, N. Nishiyama, +6 authors K. Iga
- Materials Science
- 23 November 2000
Electrically pumped near 1.3 /spl mu/m GaInNAs/GaAs vertical-cavity surface-emitting lasers grown by metalorganic chemical vapour deposition are demonstrated for the first time. The threshold current… Expand
Recent advances in VCSEL photonics
- F. Koyama
- Computer Science, Materials Science
- 16th Opto-Electronics and Communications…
- 1 December 2006
TLDR
Room-temperature continuous wave lasing characteristics of a GaAs vertical cavity surface-emitting laser
- F. Koyama, S. Kinoshita, K. Iga
- Physics
- 17 July 1989
Room‐temperature continuous wave (cw) operation of a GaAs vertical microcavity surface‐emitting laser has been achieved. An ultrashort cavity device with a cavity length of ∼5.5 μm was grown by… Expand
Record low-threshold index-guided InGaAs/GaAlAs vertical-cavity surface-emitting laser with a native oxide confinement structure
- Y. Hayashi, T. Mukaihara, +4 authors K. Iga
- Materials Science
- 30 March 1995
An index-guided InGaAs/GaAlAs vertical-cavity surface-emitting laser with a native oxide confinement structure has been proposed and fabricated. A record threshold current of 70 µA was achieved with… Expand