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2 results on '"Rintaro Koda"'

1. Intensity Correlation Analysis on Blue-Violet FemtosecondPulses from a Dispersion-Compensated GaInN Mode-LockedSemiconductor Laser Diode

Author

Shunsuke Kono, Rintaro Koda, Hideki Watanabe, Noriyuki Fuutagawa, and Hironobu Narui

Subjects
GaN, mode-locked semiconductor laser diode, gain saturation, saturableabsorption, self-phase modulation, soliton-like mode locking, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999
Abstract

We investigated the spectral and temporal characteristics of blue-violetfemtosecond optical pulses generated by a passively mode-locked GaInN laser diode ina dispersion-compensated external cavity. The output optical pulses at 400 nm wereanalyzed in detail by intensity auto- and cross-correlation measurements using secondharmonic generation on the surface of a β-BaB2O4 crystal. The obtained results clarifiedwavelength-dependent chirp characteristics of the optical pulses. The analysis suggestedthat a large frequency shift due to saturation in the saturable absorber and gain sectionsplayed an important role in the generation of femtosecond optical pulses.

Published
2015
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2. Intensity Correlation Analysis on Blue-Violet FemtosecondPulses from a Dispersion-Compensated GaInN Mode-LockedSemiconductor Laser Diode

Author

Hironobu Narui, Noriyuki Fuutagawa, Shunsuke Kono, Hideki Watanabe, and Rintaro Koda

Subjects
Materials science, soliton-like mode locking, gain saturation, Physics::Optics, lcsh:Technology, law.invention, GaN, Crystal, lcsh:Chemistry, Optics, saturableabsorption, law, Dispersion (optics), Chirp, mode-locked semiconductor laser diode, General Materials Science, Self-phase modulation, Instrumentation, Saturation (magnetic), lcsh:QH301-705.5, Fluid Flow and Transfer Processes, Laser diode, business.industry, lcsh:T, Process Chemistry and Technology, General Engineering, self-phase modulation, Saturable absorption, lcsh:QC1-999, Computer Science Applications, lcsh:Biology (General), lcsh:QD1-999, lcsh:TA1-2040, Femtosecond, Optoelectronics, business, lcsh:Engineering (General). Civil engineering (General), lcsh:Physics
Abstract

We investigated the spectral and temporal characteristics of blue-violetfemtosecond optical pulses generated by a passively mode-locked GaInN laser diode ina dispersion-compensated external cavity. The output optical pulses at 400 nm wereanalyzed in detail by intensity auto- and cross-correlation measurements using secondharmonic generation on the surface of a β-BaB2O4 crystal. The obtained results clarifiedwavelength-dependent chirp characteristics of the optical pulses. The analysis suggestedthat a large frequency shift due to saturation in the saturable absorber and gain sectionsplayed an important role in the generation of femtosecond optical pulses.

Published
2015

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