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A Tm3+,Ho3+:KY(WO4)2 (Tm,Ho:KYW) laser passively mode-locked by using semiconductor saturable absorber mirror (SESAM) is demonstrated. The SESAM used for the initiation and stabilisation of passive mode locking incorporated a GaSb/AlAsSb DBR structure having a high reflectivity and InGaAsSb quantum wells as the absorber.
Theoretical and experimental results are presented for the potential to eliminate group delay dispersion of resonant SESAMs over broad spectral bandwidths through the design of a single dielectric cap layer of carefully selected refractive index.
We describe the operation of a femtosecond Cr4+:YAG laser that has been mode locked using a novel GaInNAsSb SESAM. 230 fs pulses were generated at an average output power of 280 mW.
In this paper, we report on both experimental and theoretical investigations on the dynamics of self-pulsation regimes in a two-section QD laser that is operating simultaneously on the GS and ES transitions. We show that the competition between the two states results in anti-phase dynamics. We also found a sub-harmonic sequence that leads ultimately to chaos.
We report on the generation of femtosecond pulses in the 1-μm and 1.3-μm spectral regions from Yb:KYW and Cr:forsterite lasers, respectively, where InAs/InGaAs quantum dot based saturable absorber mirrors (QD-SAMs) have been utilised. For the experimental observations reported here, cw Yb:KYW and Cr:forsterite lasers pumped by a tapered 980nm laser diode and a Nd:YVO4 laser at 1064nm, respectively,...
Efficient passive mode locking of a diode-pumped Yb3+:KY(WO4)2 laser using a quantum-dot saturable absorber is demonstrated. Pulses of 114 fs centered around 1040 nm were generated with an average output power of 0.5 W.
In this paper, we demonstrate for the first time to our knowledge, an external cavity quantum-dot laser, mode-locked using a quantum-dot semiconductor saturable absorber mirrors (SESAM). The laser exhibits high-average power of up to 27 mW and RF linewidth of 10 Hz
Femtosecond operation of a solid-state laser passively mode locked by a quantum-dot saturable absorber has been demonstrated. Controllability of the pulse duration is demonstrated with pulses ranging from 58 ps to 158 fs around 1280 nm.
We demonstrate stable mode locking in a Yb:KYW laser by using a quantum-dot saturable absorber structure with p-n-junction. A reduction in the output pulse duration was measured when a reverse bias was applied to SESAM.
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