Dual-wavelength mode-locked lasers can be widely used in optical communication, pump-probe experiment, nonlinear frequency conversion, etc. In this paper, a dual-wavelength self-mode-locked semiconductor disk laser is reported for the first time, to best of our knowledge. A simple linear resonator formed by using high reflectivity distributed Bragg reflector at bottom gain chip, and an external...

Abstract To reduce the contour error of end-effector a robotic manipulator during trajectory tracking, dual-mode synchronization predictive control is proposed. First, dynamic model n-degree-of-freedom (n-DOF) discretized by using Taylor expansion method, and mapping relationship between joint in space task constructed. Second, tracking are defined, coupling joints derived through coefficient λ...

A novel type of compact and high selectivity dual-band bandpass filter (BPF) incorporating a dualmode defected ground structure resonator (DDGSR) and a dual-mode open-stub loaded stepped impedance resonator (DOLSIR) is proposed in this paper. Utilizing capacitive source-load coupling and the intrinsic characteristics of the two types of dual-mode resonators, compact dualband BPF with multi tran...