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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
Ultrafast Raman laser mode-locked by nanotubes
C E S Castellani1, E J R Kelleher, J C Travers
1Department of Physics, Blackett Laboratory, Imperial College London, London, UK. c.schmidt‐castellani09@imperial.ac.uk
Optics Letters
|October 18, 2011
Summary
We achieved passive mode-locking in a Raman fiber laser using a nanotube saturable absorber. This method generates and compresses ultrashort pulses, creating a versatile laser source for diverse applications.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Passive mode-locking is crucial for generating ultrashort laser pulses.
- Nanotube-based saturable absorbers offer unique nonlinear optical properties.
- Net normal dispersion cavities are explored for pulse generation and control.
Purpose of the Study:
- To demonstrate passive mode-locking of a Raman fiber laser.
- To utilize a nanotube saturable absorber for pulse generation.
- To achieve high peak power and wavelength versatility in the laser output.
Main Methods:
- Employing a nanotube-based saturable absorber.
- Configuring a net normal dispersion fiber laser cavity.
- Implementing pulse compression techniques.
Main Results:
- Successfully achieved passive mode-locking.
- Generated highly chirped 500 ps pulses.
- Compressed pulses to 2 ps with 1.4 kW peak power.
Conclusions:
- The developed Raman fiber laser is a simple and wavelength-versatile source.
- Nanotube saturable absorbers are effective for passive mode-locking.
- This approach enables practical applications requiring high peak power ultrashort pulses.
