Sound propagation properties of a duct system with Helmholtz resonators (HRs) are affected by mean flow.Previous studies have tended to focus on the effects of
We demonstrate that the etalon effects of alkali cells can be used as the output coupler of an alkali laser.Based on a rubidium cell with highlyparallelized win
Measurement-device-independent quantum key distribution (MDI-QKD) offers a practical way to realize a startype quantum network.Previous experiments on MDI-QKD n
We develop a two-stage end-pumped Nd∶YVO4 amplifier seeded by a passively Q-switched microchip laser.An average output power of 13.5W with repetition rate up t