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206 MHz fully stabilized all-PM dispersion-managed figure-9 fiber laser comb
Shotaro Kitajima1, Kwangyn Jung2, Norihiko Nishizawa2
1Department of Electronics, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya, 464-8603, Japan. kitajima@nuee.nagoya-u.ac.jp.
Scientific Reports
|March 27, 2024
Summary
A new fiber laser offers a broad spectrum and high repetition rate for precision spectroscopy. This advanced laser achieves unprecedented spectral bandwidth and short pulse duration, enhancing spectroscopic applications.
Area of Science:
- Optics and Photonics
- Laser Physics
Background:
- High-repetition-rate optical frequency combs are crucial for precision spectroscopy.
- Conventional lasers lack the broad spectrum required for advanced spectroscopic applications.
Purpose of the Study:
- To demonstrate a stabilized, high-repetition-rate fiber laser with a broad spectrum.
- To overcome limitations of conventional lasers for precision spectroscopy.
Main Methods:
- Utilized a polarization-maintaining figure-9 mode-locked fiber laser.
- Implemented simultaneous control of cavity dispersion and length.
- Achieved fCEO and frep phase locking.
Main Results:
- Demonstrated a laser with a 206 MHz repetition rate and 88 nm spectral bandwidth.
- Achieved a compressed pulse width of 66 fs.
- Obtained low in-loop carrier-envelope-offset frequency phase noise (0.21 rad).
Conclusions:
- This work presents the widest spectrum bandwidth and shortest pulse duration from an all-PM figure-9 fiber laser oscillator.
- The developed laser system is highly suitable for precision spectroscopy and other applications requiring high repetition rates and broad spectral ranges.
