Demonstration of 0.67-mJ and 10-ns high-energy pulses at 2.72 µm from large core Er:ZBLAN fiber amplifiers
Abstract
We explored generation of high-energy nanosecond short pulses in the mid-IR wavelength range using 30–70-µm-core Er:ZBLAN fiber amplifiers. The highest energies achieved were ∼ 0.7 m J at 2.72 µm in 11.5-ns-long pulses, with the corresponding peak power of 60.3 kW, obtained with a 70-µm-diameter core fiber amplifier pumped at 976 nm and seeded by a K T i O A s O 4 -based optical parametric oscillator/optical parametric amplifier system. To the best of our knowledge, these pulse energies are the highest achieved to date from mid-IR fiber lasers at longer than 2-µm wavelengths with nanosecond pulses. The achieved highest pulse energies were limited by the surface damage of unprotected fiber output facets.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 30, 2020
- Source ID
- 10.1364/ol.400065
Entities
People
- Almantas Galvanauskas
- Igor Jovanovic
- John Nees
- Weizhi Du
- Xuan Xiao
- Yifan Cui
Organizations
- Office of Naval Research