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A Nd(3+)-doped cw fiber laser using all-fiber reflectors
Applied Optics
|May 22, 2010
Summary
We developed a new all-fiber resonant optical cavity using fiber loop reflectors. This novel laser design, utilizing neodymium-doped fiber, successfully achieved lasing at 1064 nm.
Area of Science:
- Optics and Photonics
- Fiber Lasers
- Optical Cavity Design
Background:
- Traditional optical cavities often involve bulk optical components.
- Integrating optical functions into fiber systems offers advantages in compactness and robustness.
- Fiber-based laser resonators are crucial for various photonic applications.
Purpose of the Study:
- To demonstrate a novel all-fiber resonant optical cavity.
- To investigate the performance of fiber loop reflectors in laser applications.
- To achieve lasing in a neodymium-doped fiber system using this new cavity design.
Main Methods:
- Constructed an all-fiber resonant optical cavity using two fiber loop reflectors.
- Fabricated fiber loop reflectors from the output ports of a fiber directional coupler.
- Utilized a continuous length of neodymium (Nd3+)-doped fiber as the gain medium.
- Pumped the doped fiber using a gallium arsenide (GaAs) laser diode.
Main Results:
- Successfully demonstrated lasing at a wavelength of 1064 nm.
- Showcased that fiber loop reflector reflectivity is dependent on coupler characteristics (coupling ratio, insertion loss).
- Provided both theoretical analysis and practical experimental results for the device.
Conclusions:
- The novel all-fiber resonant optical cavity design is effective for laser operation.
- Fiber loop reflectors offer a viable alternative to traditional mirrors in fiber laser systems.
- The demonstrated Nd3+-doped fiber laser operates efficiently at 1064 nm using this cavity configuration.
