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Title: Fiber-amplifier-pumped, 1-MHz, 1-µJ, 21-µm, femtosecond OPA with chirped-pulse DFG front-end

Abstract

High-repetition-rate, high-power, few-cycle mid-infrared lasers with carrier-envelope phase (CEP) stabilization are ideal driving sources for studying strong-field nonlinear processes, such as strong-field driven electron emission, solid-state high-harmonic generation, and nonlinear microscopy. Here, we report on a 1-MHz, 1-μJ, femtosecond, 2.1-µm optical parametric amplifier (OPA), pumped by a Yb-doped fiber chirped-pulse amplifier (CPA) and seeded by a chirped-pulse difference-frequency generation (DFG) front-end providing positively chirped 2.1-μm signal pulses. The home-built multi-stage 1030-nm Yb-doped fiber CPA pump laser generates >55-μJ near-transform-limited (245-fs) pulses at 1 MHz repetition rate using a novel 4-pass all-fiber stretcher/front-end for careful dispersion/spectral management. The chirped-pulse DFG scheme is achieved by wave-mixing the 1030 nm pump pulse with a dispersive wave at 645–735 nm generated in a photonic crystal fiber, allowing passive CEP stability of the 2.1-µm pulses. The 2.1-μm pulse is amplified to 1 μJ in a two-stage dispersion-managed optical parametric amplifier (OPA) with a pump energy of ~21 μJ resulting in 95-fs pulses with nice beam profile without additional pulse compression. Multi-μJ, sub-30 fs pulses can be obtained at full pump energy and additional dispersion compensation. The fiber-amplifier-based mid-infrared OPA can be directly applied to high-harmonic generation in solids and optical-field-driven nanophotonic devices and is amore » compact front-end for a future high-power, high-repetition-rate, long wavelengths CEP-stabilized source for gas-phase high-order harmonic generation.« less

Authors:
; ; ORCiD logo; ; ;
Publication Date:
Research Org.:
Univ. of Alabama, Birmingham, AL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Helmholtz Association; European Research Council (ERC); Gordon and Betty Moore Foundation; US Air Force Office of Scientific Research (AFOSR); China Scholarship Council (CSC); German Research Foundation (DFG)
OSTI Identifier:
1499837
Alternate Identifier(s):
OSTI ID: 1612961
Grant/Contract Number:  
SC0018378; 609920
Resource Type:
Journal Article: Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 27 Journal Issue: 6; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Optics

Citation Formats

Liu, Yizhou, Krogen, Peter, Hong, Kyung-Han, Cao, Qian, Keathley, Phillip, and Kärtner, Franz X. Fiber-amplifier-pumped, 1-MHz, 1-µJ, 21-µm, femtosecond OPA with chirped-pulse DFG front-end. United States: N. p., 2019. Web. doi:10.1364/OE.27.009144.
Liu, Yizhou, Krogen, Peter, Hong, Kyung-Han, Cao, Qian, Keathley, Phillip, & Kärtner, Franz X. Fiber-amplifier-pumped, 1-MHz, 1-µJ, 21-µm, femtosecond OPA with chirped-pulse DFG front-end. United States. https://doi.org/10.1364/OE.27.009144
Liu, Yizhou, Krogen, Peter, Hong, Kyung-Han, Cao, Qian, Keathley, Phillip, and Kärtner, Franz X. 2019. "Fiber-amplifier-pumped, 1-MHz, 1-µJ, 21-µm, femtosecond OPA with chirped-pulse DFG front-end". United States. https://doi.org/10.1364/OE.27.009144.
@article{osti_1499837,
title = {Fiber-amplifier-pumped, 1-MHz, 1-µJ, 21-µm, femtosecond OPA with chirped-pulse DFG front-end},
author = {Liu, Yizhou and Krogen, Peter and Hong, Kyung-Han and Cao, Qian and Keathley, Phillip and Kärtner, Franz X.},
abstractNote = {High-repetition-rate, high-power, few-cycle mid-infrared lasers with carrier-envelope phase (CEP) stabilization are ideal driving sources for studying strong-field nonlinear processes, such as strong-field driven electron emission, solid-state high-harmonic generation, and nonlinear microscopy. Here, we report on a 1-MHz, 1-μJ, femtosecond, 2.1-µm optical parametric amplifier (OPA), pumped by a Yb-doped fiber chirped-pulse amplifier (CPA) and seeded by a chirped-pulse difference-frequency generation (DFG) front-end providing positively chirped 2.1-μm signal pulses. The home-built multi-stage 1030-nm Yb-doped fiber CPA pump laser generates >55-μJ near-transform-limited (245-fs) pulses at 1 MHz repetition rate using a novel 4-pass all-fiber stretcher/front-end for careful dispersion/spectral management. The chirped-pulse DFG scheme is achieved by wave-mixing the 1030 nm pump pulse with a dispersive wave at 645–735 nm generated in a photonic crystal fiber, allowing passive CEP stability of the 2.1-µm pulses. The 2.1-μm pulse is amplified to 1 μJ in a two-stage dispersion-managed optical parametric amplifier (OPA) with a pump energy of ~21 μJ resulting in 95-fs pulses with nice beam profile without additional pulse compression. Multi-μJ, sub-30 fs pulses can be obtained at full pump energy and additional dispersion compensation. The fiber-amplifier-based mid-infrared OPA can be directly applied to high-harmonic generation in solids and optical-field-driven nanophotonic devices and is a compact front-end for a future high-power, high-repetition-rate, long wavelengths CEP-stabilized source for gas-phase high-order harmonic generation.},
doi = {10.1364/OE.27.009144},
url = {https://www.osti.gov/biblio/1499837}, journal = {Optics Express},
issn = {1094-4087},
number = 6,
volume = 27,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1364/OE.27.009144

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Works referencing / citing this record:

Fiber-amplifier-pumped, 1-MHz, 1$\mu$J, 2.1 $\mu$m, femtosecond OPA with chirped-pulse DFG front-end
text, January 2019