3.0-μm wavelength-tunable compact light source with 805/1064-nm differential frequency generation using intracavity photon reuse and spectrum shaping techniques

Naokatsu Yamamoto, Kouichi Akahane, Tetsuya Kawanishi, Hideyuki Sotobayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Mid-infrared (mid-IR) light sources operating in the 3-μm waveband are useful photonic devices for the spectroscopic detection of trace gases and biomaterials. In order to achieve efficient mid-IR light emissions with a small footprint, we propose an attractive technique for developing a compact intracavity system that enables the reuse of the photons emitted by the pump source. Periodically poled congruent LiNbO3(PPCLN) and Nd-YVO 4crystals were both set in the intracavity. An 805-nm waveband GaAs-based laser diode was used as the signal and pump light sources for differential frequency generation (DFG), since GaAs-based device technology enables the construction of high-power, highefficiency lasers operating in this waveband. We have successfully demonstrated that a 3-μm wavelength-tunable light source using the photon reuse technique is the most effective and compact intracavity system; it possesses useful broadband wavelength tunability characteristics up to approximately 90 nm and offers a small footprint (15 × 30 cm). We obtained high output power of the order of a few milliwatts from the developed light source. In addition, since the optical spectrum shape of the mid-IR light is also important, we propose a useful spectrum shaping technique using a Fabry-Perot (FP) etalon filter included in the intracavity system; we obtained a fine single-peak spectrum in the 3-μm waveband. The developed wavelength-tunable compact intracavity mid-IR light source using the photon reuse and spectrum shaping techniques is attractive for optical communications and biomedical applications.

Original languageEnglish
Title of host publicationSolid State Lasers XXI
Subtitle of host publicationTechnology and Devices
PublisherSPIE
ISBN (Print)9780819488787
DOIs
Publication statusPublished - 2012 Jan 1
EventSolid State Lasers XXI: Technology and Devices - San Francisco, CA, United States
Duration: 2012 Jan 222012 Jan 25

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8235
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSolid State Lasers XXI: Technology and Devices
CountryUnited States
CitySan Francisco, CA
Period12/1/2212/1/25

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Keywords

  • Differential frequency generation (DFG)
  • Infrared and far-infrared
  • Mid-infrared
  • Nonlinear optics
  • Quasi-phase-matching (QPM)
  • Solid-state laser
  • Wavelength conversion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Yamamoto, N., Akahane, K., Kawanishi, T., & Sotobayashi, H. (2012). 3.0-μm wavelength-tunable compact light source with 805/1064-nm differential frequency generation using intracavity photon reuse and spectrum shaping techniques. In Solid State Lasers XXI: Technology and Devices [823504] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8235). SPIE. https://doi.org/10.1117/12.907580