Nonlinear conversion of a cw beam into a train of intense, short pulses in a fiber laser
Abstract
The possibility of using optical fibers to convert a CW laser beam into a periodic train of intense, short pulses in a stimulated Brillouin fiber laser is considered. The concept underlying this conversion is the excitation of stimulated Brillouin scattering in an optical fiber in an optical resonator. As the emission develops, intense, short backscattered pulses are formed. In each successive transit through the fiber, these pulses 'absorb' all the energy of the pump light sorted over the period of the resonator. Numerical methods have been used to analyze the dynamics of the operation of a stimulated Brillouin fiber laser in a plane-wave model, taking saturation and finite relaxation time of the hypersonic wave into account. The pulses that are produced have a length an order of magnitude shorter than the relaxation time of a hypersonic wave.
- Publication:
-
ZhETF Pisma Redaktsiiu
- Pub Date:
- April 1985
- Bibcode:
- 1985ZhPmR..41..323D
- Keywords:
-
- Brillouin Effect;
- Continuous Wave Lasers;
- Fiber Optics;
- Light Scattering;
- Pulsed Lasers;
- Light Amplifiers;
- Mode Transformers;
- Optical Fibers;
- Optical Resonators;
- Raman Spectra;
- Relaxation Time;
- Lasers and Masers