A Single-Cavity Double-Frequency Buncher

Buncher Cavity for Erl

Design of the buncher cavity for Cornell / JLab ERL project is presented. This is a reentrant spherical copper cavity at a frequency of 1300 MHz. It will be installed between a 500 keV electron gun and superconducting accelerating sections in the injector part of ERL. The cavity has Q of 20,000 and a shunt impedance of 2.1 MOhm. For a design cavity voltage of 200 kV, power dissipated in cavity ...

Single actuator alignment control for improved frequency stability of a cavity-based optical frequency reference.

We demonstrate a method of controlling the alignment of a laser beam to a Fabry-Perot resonator through synchronous detection of the misalignment arising from modulating the orientation of a single beam-steering mirror. The horizontal and vertical tilt of the mirror are modulated in quadrature to drive a circular motion of the beam orientation. A corresponding modulation of the intensity of the...

Single frequency erbium fiber external cavity semiconductor laser

External cavity semiconductor lasers have long been considered an attractive way to achieve narrow linewidth single frequency operation, as the linewidth is expected to vary inversely as the square of the cavity length. In this regard, single mode fibers have often been employed as the basis of the external cavity, as they offer a compact and reasonably robust way of forming long cavity lengths...

Frequency-selective single-photon detection using a double quantum dot.

We use a double quantum dot as a frequency-tunable on-chip microwave detector to investigate the radiation from electron shot-noise in a near-by quantum point contact. The device is realized by monitoring the inelastic tunneling of electrons between the quantum dots due to photon absorption. The frequency of the absorbed radiation is set by the energy separation between the dots, which is easil...

Single-frequency blue light generation by single-pass sum-frequency generation in a coupled ring cavity tapered laser