Properties of a Pulsed Ti:Sapphire Laser Oscillator with an Extended Standing-Wave Cavity

Abstract

A pulsed Ti:sapphire laser oscillator with a self-seeded grazing incidence cavity geometry, a pair of gratings, and an extended standing-wave cavity was developed, and its properties as a laser source for isotope separation were measured. Single-longitudinal-mode (SLM) operation, which is desirable for selective excitation, was performed at low pump threshold energy. Output pulses with a narrow spectral linewidth of about 25 MHz, as estimated from the temporal pulse width, could be obtained because of the developed cavity geometry. The results show that the laser is suitable for laser isotope separation.

Cesium (Cs) particle formation based on a laser photochemical reaction with a self-injection-seeded Ti:sapphire laser for Cs isotope separation

“…In addition, researchers developed a tunable Ti:sapphire laser (TSL) with narrow spectral line width that is applicable to various isotope separations, including Cs [13]. Because this laser has wide tunability, higher excited states of Cs are accessible, and therefore, an efficient one-step reaction is possible.…”

“…The excitation laser was a handmade TSL pumped by an Nd:YAG laser (PL, Lumonics HY-1200). The details of the laser system were as described elsewhere [13]. The oscillator of the TSL has a self-seeded geometry with a pair of diffraction gratings and an extended standing-wave cavity.…”