Short pulse close to round-trip time generated by cavityless high gain Nd:GdVO4 bounce geometry

TL;DR

This paper demonstrates the generation of near round-trip time laser pulses using a cavityless high gain Nd:GdVO4 bounce geometry with watt-level power and stable spectral properties.

Contribution

It introduces a cavityless high gain Nd:GdVO4 bounce geometry for generating ultra-short pulses close to the round-trip time, achieving specific pulse widths and spectral characteristics.

Findings

Pulse widths of 1.36 ns, 1.82 ns, and 2.39 ns achieved.

Output power reaches watt-level with kHz repetition rate.

Laser exhibits a continuous spectrum with 0.2 nm linewidth.

Abstract

In this paper, laser pulses with pulse-widths approach to the round-trip time are generated by utilizing a cavityless high gain Nd:GdVO4 bounce geometry. By adopting an EOQ (electro-optics Q-switch), pulse-widths of 1.36 ns, 1.82 ns, and 2.39 ns are achieved at three effective cavity lengths respectively. All these pulse-widths are close to the round-trip time of corresponding effective cavity lengths. Moreover, the output power reaches watt-level and the repetition rate is kHz-level, meanwhile the M2 factor is less than 1.3. Spectrally, the laser has a continuous spectrum with 10 dB linewidth of 0.2 nm.