Abstract
A simple way of suppression of self-mode-locking in a nanosecond Q-switched Nd3+:YAlO3 laser by placing an element introducing a negative feedback into the laser cavity, which consists of a plate of singlecrystal GaAs exhibiting two-photon absorption (complete suppression) or a cell containing colloidal solution of CdSe/ZnS quantum dots (partial suppression), is implemented. Placing the element introducing the negative feedback into the cavity of a pulsed picosecond mode-locked Nd3+:Y3Al5O12 laser allowed an increase in the number of pulses in the pulse train and a change in the energy distribution between the pulses. Specificities of laser oscillation regimes in the presence of a nonlinear absorbing element in the cavity were analyzed by numerically solving the set of balance equations describing the population inversion density and the photon flux density in the cavity.
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Original Russian Text © M.V. Kozlova, A.M. Smirnov, R.M. Al-Khuzheyri, V.N. Mantsevich, V.S. Dneprovskii, 2015, published in Optika i Spektroskopiya, 2015, Vol. 119, No. 2, pp. 323–328.
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Kozlova, M.V., Smirnov, A.M., Al-Khuzheyri, R.M. et al. Neodymium laser with negative feedback: Suppression of self-mode-locking, control of mode-locking regime. Opt. Spectrosc. 119, 306–310 (2015). https://doi.org/10.1134/S0030400X15070152
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DOI: https://doi.org/10.1134/S0030400X15070152