Sub-two-cycle octave-spanning mid-infrared fiber laser

Huang J, Pang M, Jiang X, Köttig F, Schade D, He W, Butryn M, Russell PSJ (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Optica Optical Society of America

Book Volume: 7

Pages Range: 574-579

Journal Issue: 6

DOI: 10.1364/OPTICA.389143

Abstract

Compact and powerful ultrafast light sources at high pulse repetition rates, based on mode-locked near infrared fiber lasers, are now widely available and are being used in applications such as frequency metrology, molecular spectroscopy, and laser micro-machining. The realization of such lasers in the mid-infrared has, however, remained a challenge for many years. Here we report a record-breaking three-stage fiber laser system that uses an Er-doped fluoride fiber as gain medium, delivering W-level few-cycle pulses at 2.8 µm at a repetition rate of 42.1 MHz. A fiber-based seed oscillator, cavity dispersion-managed by a pulse-stretcher, generates near-100-fs mid-infrared pulses with >110 nm spectral bandwidth. These pulses are amplified to an average power of ∼1 W in a chirp-engineered fiber amplifier, and then compressed to ∼16 fs in a short length of highly nonlinear ZBLAN fiber, resulting in a more-than-octave-wide spectrum reaching from 1.8 µm to 3.8 µm with a total power of 430 mW.

Authors with CRIS profile

Philip St. John Russell Lehrstuhl für Experimentalphysik (Alfried Krupp von Bohlen und Halbach-Professur)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Huang, J., Pang, M., Jiang, X., Köttig, F., Schade, D., He, W.,... Russell, P.S.J. (2020). Sub-two-cycle octave-spanning mid-infrared fiber laser. Optica, 7(6), 574-579. https://doi.org/10.1364/OPTICA.389143

MLA:

Huang, J., et al. "Sub-two-cycle octave-spanning mid-infrared fiber laser." Optica 7.6 (2020): 574-579.

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