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Optics Letters

Optics Letters


  • Vol. 17, Iss. 1 — Jan. 1, 1992
  • pp: 49–51

Frequency stabilization of a semiconductor laser using an external phase modulator

Hidemi Tsuchida and Takashi Iwasaki  »View Author Affiliations

Optics Letters, Vol. 17, Issue 1, pp. 49-51 (1992)

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A Ti:LiNbO3 waveguide phase modulator is used as an external frequency stabilizer to reduce the linewidth of an AlGaAs semiconductor laser. A ring interferometer is used as a frequency discriminator, and a wideband servo controller (dc to 30 MHz) is constructed in which feed-forward control of the external phase modulator is combined with feedback control of the injection current. A linewidth of 45 kHz is obtained.

© 1992 Optical Society of America

Original Manuscript: August 16, 1991
Published: January 1, 1992

Hidemi Tsuchida and Takashi Iwasaki, "Frequency stabilization of a semiconductor laser using an external phase modulator," Opt. Lett. 17, 49-51 (1992)

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