Title

Picosecond Widely Tunable Deep-Ultraviolet Laser for Angle-Resolved Photoemission Spectroscopy

Document Type

Article

Publication Date

2013

Publication Title

Chinese Physics B

DOI

10.1088/1674-1056/22/6/064212

Abstract

We develop a picosecond widely tunable laser in a deep-ultraviolet region from 175 nm to 210 nm, generated by two stages of frequency doubling of a 80-MHz mode-locked picosecond Ti:sapphire laser. A β-BaB2O4 walk-off compensation configuration and a KBe2BO3F2 prism-coupled device are adopted for the generation of second harmonic and fourth harmonics, respectively. The highest power is 3.72 mW at 193 nm, and the fluctuation at 2.85 mW in 130 min is less than ±2%.

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