A novel design of a long range semi-active radio frequency identifier (RFID) tag based on the modulated scattering technique (MST) is presented in this paper. The tag system works at 9.75 GHz and ...

A Q-switch Pr:LiYF4 laser at 639 nm pumped by a high-power GaN laser diode is demonstrated. The highest laser peak power of 4.8 W with a pulsewidth of 270 ns is ...