This paper presents the numerical design algorithm for the class-DE amplifier, taking into account optimized resonant inductor designs. The proposed design algorithm provides the element values for satisfying the class-E switching conditions. Simultaneously, the optimal inductors, which have a minimum volume for achieving the permissible power conversion efficiency, can be obtained. By carrying...

For a Nd:YVO4 crystal, a strong thermal lens astigmatism is observed by using a probe beam technique. By orienting the c-axis of the Nd:YVO4 crystal in the tangential plane of the ring resonator, we find the two astigmatisms introduced by the ring cavity and thermal lens can be mutually compensated. Such compensation improves the stability, beam quality, and conversion efficiency of the laser. ...

In this thesis, a frequency doubler is designed to produce a broadband local oscillator signal (LO) around 200 GHz. A linear array of four Schottky varactors are incorporated into a GaAs flip-chip in a balanced anti-series configuration [1], so as to generate the second harmonic of the incoming signal. The varactor chip is soldered to a suspended microstrip quartz circuit, which constitutes the...

An efficient Q-switched dual-wavelength laser with self-frequency Raman conversion in composite Nd:YVO(4) and intracavity sum-frequency generation in BBO is reported. With an input pump power of 17.5 W, average power of 0.53 W at the first-Stokes 1176 nm and average power of 1.67 W at the sum-frequency mixed 559 nm are simultaneously generated at a pulse repetition rate of 100 kHz, correspondin...