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Published on: November 22, 2019
High peak-power picosecond pulse generation at 1.26 µm using a quantum-dot-based external-cavity mode-locked laser
Y Ding1, R Aviles-Espinosa, M A Cataluna
1School of Engineering, Physics and Mathematics, University of Dundee, Dundee DD1 4HN, UK. y.ding@dundee.ac.uk
Abstract:
In this paper, we present the generation of high peak-power picosecond optical pulses in the 1.26 μm spectral band from a repetition-rate-tunable quantum-dot external-cavity passively mode-locked laser (QD-ECMLL), amplified by a tapered quantum-dot semiconductor optical amplifier (QD-SOA). The laser emission wavelength was controlled through a chirped volume Bragg grating which was used as an external cavity output coupler. An average power of 208.2 mW, pulse energy of 321 pJ, and peak power of 30.3 W were achieved. Preliminary nonlinear imaging investigations indicate that this system is promising as a high peak-power pulsed light source for nonlinear bio-imaging applications across the 1.0 μm - 1.3 μm spectral range.
