Abstract
We have studied the quality of frequency of tuning in a diode laser based on a double heterostructures of the n-InAsSbP/n-InAsSb/p-InAsSbP type driven by short current pulses with positive ramp top. It is established that a monotonic increase in the tuned mode frequency with the time is retained during the first 30-µs-long period of current growth. Then, the dependence of the frequency on the current weakens because of the appearance of nontunable modes. The maximum range of monotonic single-frequency tuning is achieved at a small pulse duration (< 30 μs), which shows prospects for the development of ultrafast-response laser diode spectroscopy.
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Original Russian Text © A.P. Astakhova, T.N. Danilova, A.N. Imenkov, K.V. Kalinina, M.A. Sipovskaya, Yu.P. Yakovlev, 2008, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2008, Vol. 34, No. 20, pp. 44–50.
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Astakhova, A.P., Danilova, T.N., Imenkov, A.N. et al. Ultrafast frequency tuning in diode lasers based on InAsSb/InAsSbP heterostructures operating in the 3–4 μm spectral range. Tech. Phys. Lett. 34, 881–883 (2008). https://doi.org/10.1134/S1063785008100210
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DOI: https://doi.org/10.1134/S1063785008100210