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White-light frequency comb generation with a diode-pumped Cr:LiSAF laser
Optics Letters
|December 1, 2007
Summary
We generated an ultra-broad optical spectrum using a portable laser and photonic crystal fiber. The resulting frequency comb maintains its structure, ideal for precise optical measurements.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- Ultrabroadband light sources are crucial for advanced optical applications.
- Maintaining spectral coherence during supercontinuum generation is challenging.
Purpose of the Study:
- To generate an octave-spanning spectrum using a compact laser system.
- To preserve the frequency comb structure of the generated supercontinuom.
Main Methods:
- Utilized femtosecond pulses from a battery-operated Cr:LiSAF laser.
- Launched the laser pulses into a photonic crystal fiber for spectral broadening.
Main Results:
- Achieved a spectrum broader than one optical octave.
- Preserved the frequency comb structure despite significant spectral broadening.
Conclusions:
- Demonstrated a portable and robust method for generating broadband frequency combs.
- The generated frequency comb is suitable for optical frequency metrology applications.
