We report a cavity-dumped 1123 nm laser with narrow pulse width and high peak power by an Mg O: LN crystal electrooptic(EO) modulator. Based on the structural optimization design of a folded biconcave cavity using the 808 nm pulsed laser diode(LD) side-pumped ceramic Nd: YAG rod, output pulses with maximum pulse energy and peak power up to39.6 m J and 9.73 MW were obtained, corresponding to 100 Hz repetition rate and 4.07 ns pulse width. The instabilities of pulse width and pulse energy were ±1.55% and ±2.06%, respectively. At the highest repetition rate of 1 kHz, the pulse energy, pulse width, and peak power were 11.3 mJ, 5.05 ns, and 2.24 MW, respectively. The instabilities of pulse width and pulse energy were ±2.65% and ±3.47%, respectively.
Yang BaiBing BaiDiao LiYanxiao SunJianlin LiLei HouMingxuan HuJintao Bai
We report a double Q-switched 946 nm laser with a magnesium-oxide-doped LiNbO_3(MgO:LN) electro-optic(EO) crystal and a monolayer molybdenum diselenide(MoSe_2) saturable absorber(SA). A pulsed laser diode side-pumped long neodymium-doped yttrium aluminum garnet rod(φ3 × 65 mm) is used as the gain medium.Large pulse energy up to 3.15 m J and peak power up to 346 kW are generated at the repetition rate of 550 Hz,corresponding to the beam quality factors of M_x^2=3.849, M_y^2=3.868. Monolayer MoSe_2 nanosheets applied in the experiment would be a promising SA for a passive Q-switching operation.
