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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Extended single-mode photonic crystal fiber lasers
Optics Express
|June 12, 2009
Summary
Researchers developed a novel ytterbium-doped photonic crystal fiber for amplifying laser pulses. This fiber achieves record low nonlinearity and high power per unit length, enabling high peak power amplification.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Photonic crystal fibers (PCFs) offer unique light-guiding properties.
- High-power fiber lasers are crucial for various scientific and industrial applications.
- Nonlinearity and mode control are key challenges in high-power fiber laser development.
Purpose of the Study:
- To develop and characterize a novel ytterbium-doped photonic crystal fiber.
- To investigate its potential for high-power amplification of short laser pulses.
- To demonstrate record-breaking power per unit length in fiber lasers.
Main Methods:
- Fabrication of an ytterbium-doped PCF with a 60 micrometer core diameter.
- Characterization of the fiber's mode-field area and absorption length.
- Continuous-wave (CW) laser power extraction experiments.
Main Results:
- The PCF exhibited a mode-field area of ~2000 microm(2) and a short absorption length of 0.5 m.
- Record low nonlinearity was achieved, suitable for high peak power amplification.
- A CW output power of 320 W was extracted, corresponding to 550 W per meter, a record for fiber lasers.
Conclusions:
- The developed ytterbium-doped PCF demonstrates significant potential for high-power laser applications.
- The low nonlinearity and high power per unit length are key advantages.
- Further development of large-mode-area PCFs shows promise for future advancements in fiber laser technology.
