What is he best known for?
The fields of study he is best known for:
- Optics
- Laser
- Optoelectronics
Optoelectronics, Laser, Optics, Semiconductor laser theory and Vertical-cavity surface-emitting laser are his primary areas of study.
His research links Quantum well with Optoelectronics.
His study looks at the intersection of Laser and topics like Chemical vapor deposition with Metalorganic vapour phase epitaxy, Wafer and Layer.
His Semiconductor laser theory research is multidisciplinary, incorporating elements of Molecular beam epitaxy, Heterojunction, Continuous wave, Dielectric and Superlattice.
The various areas that Fumio Koyama examines in his Vertical-cavity surface-emitting laser study include Longitudinal mode, Extinction ratio and Bandwidth.
His Distributed Bragg reflector research is multidisciplinary, incorporating perspectives in Reactive-ion etching and Active layer.
His most cited work include:
- Surface emitting semiconductor lasers (528 citations)
- Frequency chirping in external modulators (412 citations)
- Recent Advances of VCSEL Photonics (313 citations)
What are the main themes of his work throughout his whole career to date?
Fumio Koyama mainly investigates Optoelectronics, Optics, Laser, Vertical-cavity surface-emitting laser and Wavelength.
His Optoelectronics study often links to related topics such as Quantum well.
His work carried out in the field of Quantum well brings together such families of science as Chemical beam epitaxy and Photoluminescence.
Fumio Koyama focuses mostly in the field of Laser, narrowing it down to topics relating to Metalorganic vapour phase epitaxy and, in certain cases, Chemical vapor deposition.
As part of one scientific family, Fumio Koyama deals mainly with the area of Vertical-cavity surface-emitting laser, narrowing it down to issues related to the Beam, and often Scanner.
His Wavelength-division multiplexing study in the realm of Wavelength connects with subjects such as Cantilever.
He most often published in these fields:
- Optoelectronics (80.94%)
- Optics (67.32%)
- Laser (39.65%)
What were the highlights of his more recent work (between 2013-2021)?
- Optics (67.32%)
- Optoelectronics (80.94%)
- Vertical-cavity surface-emitting laser (38.01%)
In recent papers he was focusing on the following fields of study:
His primary areas of investigation include Optics, Optoelectronics, Vertical-cavity surface-emitting laser, Slow light and Wavelength.
In his papers, Fumio Koyama integrates diverse fields, such as Optics and Transverse plane.
His studies deal with areas such as Bandwidth, Laser and Voltage as well as Optoelectronics.
His Vertical-cavity surface-emitting laser study also includes fields such as
- Modulation and related Radio over fiber,
- Laser beam quality, which have a strong connection to Beam diameter.
His Slow light research incorporates themes from Semiconductor and Waveguide.
His Wavelength research incorporates elements of Polarization and Mechanical resonance.
Between 2013 and 2021, his most popular works were:
- High-speed operation of bow-tie-shaped oxide aperture VCSELs with photon–photon resonance (44 citations)
- High-speed operation of bow-tie-shaped oxide aperture VCSELs with photon–photon resonance (44 citations)
- Highly angular dependent high-contrast grating mirror and its application for transverse-mode control of VCSELs (30 citations)
In his most recent research, the most cited papers focused on:
- Optics
- Laser
- Optoelectronics
His scientific interests lie mostly in Optics, Optoelectronics, Vertical-cavity surface-emitting laser, Laser and Wavelength.
His work on Distributed Bragg reflector, Slow light, Waveguide and Beam is typically connected to Transverse plane as part of general Optics study, connecting several disciplines of science.
Fumio Koyama has researched Optoelectronics in several fields, including Laser beam quality and Bandwidth.
Fumio Koyama has included themes like Modulation, Optical amplifier, Oscillation, Electro-absorption modulator and Amplifier in his Vertical-cavity surface-emitting laser study.
The various areas that he examines in his Laser study include Substrate, Detector, Insertion loss and Gigabit.
His research investigates the connection between Wavelength and topics such as Polarization that intersect with issues in Diffraction, Multi-mode optical fiber, Hollow waveguide and Optical coupler.
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