Citation
Vilera Suárez, María Fernanda and Pérez Serrano, Antonio and García Tijero, José Manuel and Esquivias Moscardo, Ignacio
(2015).
Emission characteristics of a 1.5-mu m all-semiconductor tapered master oscillator power amplifier.
"IEEE PHOTONICS JOURNAL", v. 7
(n. 2);
pp..
ISSN 1943-0655.
https://doi.org/10.1109/JPHOT.2015.2402597.
Abstract
We present experimental results on the emission characteristics of a 1.5-_m distributed feedback (DFB) tapered master oscillator power amplifier (MOPA) in a wide range of steady-state injection conditions, showing different dynamical behaviors. A detailed analysis of the optical and radio-frequency spectra has allowed the identification of three different emission regimes: i) stable amplified DFB emission, but with wavelength jumps when sweeping the injection currents; ii) multimode Fabry–Perot (FP) operation of the complete MOPA cavity; and iii) self-pulsed operation at frequencies between 5 and 8 GHz. The quasi-periodic occurrence of these emission regimes as a function of the injected currents is interpreted in terms of a thermally tuned competition between the modes of the master oscillator and the compound cavity modes. The physical origin of the wavelength jumps and of the alternation between regimes is discussed
