Related Experiment Video
Updated: May 26, 2026
08:48
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Wavelength-tunable and pulse-width variable Fourier domain mode-locking lasers
1College of Electronics and Information, Institute for Laser Engineering, Kyung Hee University, Giheung-gu, Yongin-si, Gyeonggi-do, Korea.
Optics Letters
|December 20, 2011
Summary
Researchers developed tunable lasers with adjustable pulse widths, achieving over 100 nm spectral tuning. This advancement offers precise control for various laser applications.
Area of Science:
- Photonics and Laser Technology
- Optical Engineering
Background:
- Fourier domain mode-locking (FDML) lasers are crucial for high-speed optical applications.
- Controlling laser parameters like wavelength and pulse width is essential for advanced functionalities.
Purpose of the Study:
- To develop a wavelength-tunable and pulse-width variable Fourier domain mode-locking laser.
- To demonstrate precise control over spectral range and pulse duration.
Main Methods:
- Utilized a fiber Fabry-Perot tunable filter (FFP-TF) for wavelength tuning via offset voltage.
- Employed amplitude modulation of the driving voltage to the FFP-TF for pulse width variation.
- Operated the laser at a repetition rate of 60.9 kHz.
Main Results:
- Achieved a spectral tuning range exceeding 100 nm.
- Demonstrated pulse width tunability from 6.2 μs down to 55 ns.
- Observed a linewidth variation from 0.109 nm to 0.083 nm corresponding to pulse width changes.
Conclusions:
- Successfully developed a versatile FDML laser with independent wavelength and pulse width control.
- The demonstrated tunability and control capabilities open new avenues for applications requiring customized laser outputs.
