Molecular-optic modulator

Kazuki Ihara, Chihiro Eshima, Shin Ichi Zaitsu, Singo Kamitomo, Kenji Shinzen, Yasuyuki Hirakawa, Totaro Imasaka

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15 Citations (Scopus)


An ultrafast light-intensity modulator, based on stimulated Raman scattering, is described. The intensity of a continuous wave laser is fully modulated at 17 THz using hydrogen in a high-finesse cavity. The modulation frequency is determined by the molecular constant of the Raman medium, i.e., the Raman shift frequency. The modulation frequency can be changed in the tetrahertz range by replacing the Raman medium. Due to the accurate modulation frequency and the high beam coherence, this device is amenable to a variety of applications such as in basic science and also in advanced industrial technology.

Original languageEnglish
Article number074101
JournalApplied Physics Letters
Issue number7
Publication statusPublished - Feb 24 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Ihara, K., Eshima, C., Zaitsu, S. I., Kamitomo, S., Shinzen, K., Hirakawa, Y., & Imasaka, T. (2006). Molecular-optic modulator. Applied Physics Letters, 88(7), [074101].