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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
Chirped-frequency generation in a translated-grating-type frequency-shifted feedback laser
Optics Letters
|June 15, 1997
Summary
This study explores a frequency-shifted feedback (FSF) laser with a translated grating, achieving periodic chirped-frequency generation. The laser
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Frequency-shifted feedback (FSF) lasers offer unique spectral properties.
- Controlling frequency modulation in lasers is crucial for various applications.
Purpose of the Study:
- Investigate the properties of an FSF laser utilizing a translated grating.
- Characterize the spectral output and operational dynamics of this novel laser configuration.
Main Methods:
- Employed a diode-pumped Nd:YVO(4) gain medium.
- Utilized a translated grating coupler for frequency shifting.
- Analyzed spectral characteristics using a Michelson interferometer and heterodyne experiment.
Main Results:
- Achieved stable FSF laser operation.
- Demonstrated periodic generation of chirped-frequency components.
- Observed a chirp rate of 1.8 THz/s.
Conclusions:
- The translated grating effectively functions as a frequency-shifting element in the FSF laser.
- The device exhibits unique spectral characteristics suitable for advanced optical applications.
