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Appl. Sci. 2015, 5(3), 555-565; doi:10.3390/app5030555

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

Compound Semiconductor Development Department, Semiconductor Device Development Division,Sony Corporation, 4-14-1 Asahi-cho, Atsugi-shi, Kanagawa 243-0014, Japan
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Author to whom correspondence should be addressed.
Academic Editor: Malte C. Kaluza
Received: 29 July 2015 / Revised: 24 August 2015 / Accepted: 31 August 2015 / Published: 10 September 2015
(This article belongs to the Special Issue Diode-Pumped, Ultra-Short Pulse Lasers)
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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. View Full-Text
Keywords: GaN; mode-locked semiconductor laser diode; gain saturation; saturableabsorption; self-phase modulation; soliton-like mode locking GaN; mode-locked semiconductor laser diode; gain saturation; saturableabsorption; self-phase modulation; soliton-like mode locking
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kono, S.; Koda, R.; Watanabe, H.; Fuutagawa, N.; Narui, H. Intensity Correlation Analysis on Blue-Violet FemtosecondPulses from a Dispersion-Compensated GaInN Mode-LockedSemiconductor Laser Diode. Appl. Sci. 2015, 5, 555-565.

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