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Semi-automatic, octave-spanning optical frequency counter.

Tze-An Liu1, Ren-Huei Shu, Jin-Long Peng

  • 1Center for Measurement Standards, Industrial Technology Research Institute, 321, Sec.2, Kuang Fu Rd. Hsinchu,Taiwan 300, Republic of China. liutzean@itri.org.tw

Optics Express
|July 9, 2008
PubMed
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This study introduces a semi-automatic optical frequency counter capable of octave-spanning measurements. It precisely counts laser frequencies using two fiber laser combs and computer control.

Area of Science:

  • Optics and Photonics
  • Metrology

Background:

  • Accurate optical frequency measurement is crucial for advanced scientific applications.
  • Traditional methods can be complex and limited in bandwidth.

Purpose of the Study:

  • To develop and demonstrate a semi-automatic optical frequency counter.
  • To achieve octave-spanning frequency counting capability.

Main Methods:

  • Utilized two fiber laser combs with different repetition rates.
  • Employed monochromators for approximate frequency determination.
  • Calculated exact mode numbers from mode differences and beat frequencies.
  • Implemented computer control for the measurement process.

Main Results:

Related Experiment Videos

  • Demonstrated an octave-spanning optical frequency counter.
  • Achieved semi-automatic operation for frequency counting.
  • Successfully determined exact mode numbers of beating comb lines.

    • Conclusions:

    • The developed system offers a robust and efficient method for optical frequency counting.
    • Semi-automatic control simplifies the measurement process.
    • Octave-spanning capability enhances the utility of the frequency counter.