Poweful 3 µm YSGG : Cr : Er and YSGG : Cr : Yb : Ho Q-switched lasers operating in the repetition-rate modeстатья
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Дата последнего поиска статьи во внешних источниках: 22 февраля 2016 г.
Аннотация:We construct Q-switched megawatt-power level YSGG : Cr : Er and YSGG : Cr : Yb : Ho lasers operating
in the repetition-rate mode of generation. We obtain the maximum output of 140 mJ at 1Hz and an
output energy of 40 mJ in a Gaussian-like mode with a repetition rate of 5 and 10 Hz. The minimum
pulse width is measured to be 50 ns. We discuss the influence of the repetition rate on the output energy and prove that a KTP crystal can be used as the electro-optic Q-switch for an YSGG : Cr : Yb : Ho laser. We achieve a 50 mJ pulse energy with 50 ns pulse width. We proposed and implement a hybrid
scheme of pulse-periodic two-wave generation of giant pulses in the cavity where the YSGG : Cr : Er and
YSGG : Cr : Yb : Ho crystals are arranged sequentially, and Q-switching is performed using frustrated
total internal reflection (FTIR). Simultaneously, we observe powerful generation at 2.79 and 2.8 µm.
We discuss the possibility to implement a hybrid solid-state YSGG : Cr : Er–YSGG : Cr : Yb : Ho laser
for THz generation and other applications.