Passively mode-locked monolithic two-section gain-guided tapered quantum-dot lasers: II. Record 15 Watt peak power generation

Nikitichev, D.I. et al. (2011) Passively mode-locked monolithic two-section gain-guided tapered quantum-dot lasers: II. Record 15 Watt peak power generation. In: 2011 Conference on Lasers and Electro-Optics Europe (CLEO EUROPE) and 12th European Quantum Electronics Conference (EQEC), Munich, Germany, 22-26 May 2011, (doi: 10.1109/CLEOE.2011.5942560)

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Publisher's URL: http://dx.doi.org/10.1109/CLEOE.2011.5942560

Abstract

In our recent work, we have shown that output average/peak power and pulse energy can be greatly increased using a tapered (or flared) gain-guided structure. Two-section devices incorporating 5 or 10 QD layers with a total length of ~2.78mm were used, resulting in pulse repetition rates of the order of 14.6 GHz. With an absorber-to-gain lengths ratio of 1:7, the highest peak power achieved was 3.6W from both QD structures. On the other hand, a maximum average power of 209 mW corresponding to 14.2 pJ pulse energy with 6-ps pulse duration was achieved for the 5-layer QD laser. The generation of high-peak-power pulses is vital for a variety of applications such as biomedical nonlinear microscopy and imaging, where a combination of high peak power and average power (up to the limit tolerable by the bio-sample) are most effective in enhancing the nonlinear effects required. In this paper, we report the highest peak power (to our knowledge) of 15 W directly from a monolithic quantum-dot tapered laser, with sub-picosecond pulse width.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ding, Dr Ying
Authors: Nikitichev, D.I., Ruiz, M., Ding, Y., Tran, M., Robert, Y., Krakowski, M., Rossetti, M., Bardella, P., Montrosset, I., Krestnikov, I., Livshits, D., Cataluna, M.A., and Rafailov, E.U.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
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