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Updated: Jun 24, 2026
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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Environmentally stable, simple passively mode-locked fiber ring laser using a four-port circulator
Shin Masuda1, Shoji Niki, Masataka Nakazawa
1Advantest Laboratories, Ltd., 48-2 Kamiayashi, Matsubara, Aobaku, Sendai 989-3124 Miyagi, Japan. shin.masuda@jp.advantest.com
Optics Express
|April 15, 2009
Summary
We developed a stable, self-starting fiber ring laser using a novel cavity design. This robust laser operates reliably across a wide temperature range without polarization adjustments, offering high performance in a compact package.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Mode-locked fiber lasers are crucial for various applications requiring ultrashort pulses.
- Environmental stability and compact design are key challenges in current fiber laser technology.
Purpose of the Study:
- To develop a self-starting, passively mode-locked fiber ring laser with enhanced environmental stability.
- To achieve a simple, robust, and compact all-fiber laser system.
Main Methods:
- Utilized a novel cavity configuration incorporating a four-port optical circulator.
- Implemented a special ring cavity design for stable operation without polarization control.
- Characterized laser performance, including pulse width and timing jitter, across a temperature range.
Main Results:
- Achieved highly stable mode-locked operation between 25 and 60 degrees C.
- Measured a pulse width of 120 fs and integrated timing jitter of 39.1 fs (10 Hz to 10 MHz).
- Demonstrated a robust and environmentally stable all-fiber mode-locked laser.
Conclusions:
- The novel cavity design offers a simple and effective solution for stable, environmentally robust fiber lasers.
- The achieved performance metrics make this laser suitable for demanding applications.
- A compact and reliable all-fiber mode-locked laser has been successfully demonstrated.
