Switching between the mode-locking and Q-switching modes in two-section QW lasers upon a change in the absorber properties due to the Stark effect

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• 作者：I. M. Gadzhiyev ; M. S. Buyalo ; A. E. Gubenko ; A. Yu. Egorov…
• 刊名：Semiconductors
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：50
• 期：6
• 页码：828-831
• 全文大小：223 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Magnetism and Magnetic Materials
  Electromagnetism, Optics and Lasers
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1090-6479
• 卷排序：50

文摘

The passive Q-switching and mode-locking modes are implemented in two-section lasers with three quantum wells. It is demonstrated that raising the reverse bias on the absorbing section changes its spectral and dynamic properties and, accordingly, leads to a change from the Q-switching mode to mode-locking. The pulse-repetition frequency in the mode-locking mode is 75 GHz, with the product of the pulse duration by the spectrum bandwidth being 0.49, which is close to the theoretical limit. It is shown that, in structures with three quantum wells, strong absorption at the lasing wavelength gives rise to a photocurrent across a section of the saturable absorber, which is sufficient for compensation of the applied bias.Original Russian Text © I.M. Gadzhiyev, M.S. Buyalo, A.E. Gubenko, A.Yu. Egorov, A.A. Usikova, N.D. Il’inskaya, A.V. Lyutetskiy, Yu.M. Zadiranov, E.L. Portnoi, 2016, published in Fizika i Tekhnika Poluprovodnikov, 2016, Vol. 50, No. 6, pp. 843–847.