Self-heterodyne mixing method of two inter-mode beat frequencies for frequency stabilization of a three-mode He-Ne laser | Zendy

Jeongmin Lee | Zendy; Tai Hyun Yoon | Zendy

Open Access

Self-heterodyne mixing method of two inter-mode beat frequencies for frequency stabilization of a three-mode He-Ne laser

Author(s) -

Jeongmin Lee,

Tai Hyun Yoon

Publication year - 2012

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4733344

Subject(s) - beat (acoustics) , heterodyne detection , laser , optics , frequency modulation , heterodyne (poetry) , longitudinal mode , laser doppler vibrometer , frequency analysis , physics , mode (computer interface) , radio frequency , acoustics , laser beams , telecommunications , computer science , operating system

We present a robust self-heterodyne mixing method of two inter-mode beat frequencies suitable for frequency stabilization of a three longitudinal-mode (3-mode) He-Ne laser at 633 nm. A high-contrast frequency discrimination signal with a broad locking range of 244 MHz is obtained by using a self-heterodyned double balanced mixer operating at the inter-mode beat frequency of 607 MHz. We show that the central-mode frequency of the 3-mode He-Ne laser could be stabilized to the center of the gain profile with a frequency fluctuation less than ± 5 MHz for more than 12 h

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