Cesium vapor laser pumped by a volume-Bragg-grating coupled quasi-continuous-wave laser-diode array

摘要

The experimental demonstration of a broad-area Quasi-continuous-wave (QCW) laser-diode array pumped cesium vapor laser is reported in this letter according to our experimental results. We used a volume-Bragg grating to narrow the spectral linewidth for acquirement of enough resonance transitions. A glass cylindrical cell filled with cesium/buffer gas was set in an end-pumped flat-concave cavity and the gas pressure was set lower than 1 atm. Using the QCW drive mode with the repetitive rate and pulse width of 1 kHz and 50 μs, repectively, 13.45 μJ pulse energy has been achieved with the slope efficiency of about ～1.8%.