Efficient generation of >2 W of green light by single pass frequency doubling in PPMgLN

TL;DR

This paper demonstrates a highly efficient single-pass frequency doubling of 1029 nm light to green at 514.5 nm using PPMgLN, achieving over 2 W output power with record efficiency and power levels.

Contribution

It reports the highest frequency doubling efficiency and green SHG power in PPMgLN to date, advancing laser conversion technology.

Findings

32% frequency doubling efficiency achieved

2.3 W of green light generated

Record SHG power in PPMgLN

Abstract

We report 32% efficient frequency doubling of single frequency 1029 nm light to green light at 514.5 nm using a single pass configuration. A congruent composition, periodically poled magnesium doped lithium niobate (PPMgLN) crystal of 50 mm length was used to generate a second harmonic power of 2.3 W. To our knowledge, this is the highest reported frequency doubling efficiency of any wavelength light in a PPMgLN crystal and also the highest reported SHG output power in the green for PPMgLN.