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Krylov A, Senatorov A, Gladyshev A, Yatsenko Y, Kosolapov A, Kolyadin A, Khudyakov M, Likhachev M, Bufetov I. 10-µJ-level femtosecond pulse generation in the erbium CPA fiber source with microstructured hollow-core fiber assisted delivery and nonlinear frequency conversion. APPLIED OPTICS 2023; 62:5745-5754. [PMID: 37707192 DOI: 10.1364/ao.494799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/24/2023] [Indexed: 09/15/2023]
Abstract
We report on the development of a chirped pulse amplification (CPA) designed erbium fiber source with a hybrid high-power amplifier, which is composed of erbium-doped and erbium/ytterbium-co-doped double-clad large-mode-area fibers. Stretched pulses from the high-power amplifier with up to 21.9 µJ energy and 198.5 kHz repetition rate are dechirped in the transmission grating pair-based compressor with 73% efficiency, yielding as short as 742 fs duration with 15.8 µJ energy and ≈13M W peak power (maximum average power up to 3.14 W) at the central wavelength of 1.56 µm. Compressed pulses are coupled into microstructured negative-curvature hollow-core fibers with a single row capillary cladding and different core sizes of 34 µm and 75 µm in order to realize femtosecond pulse delivery with a diffraction-limited output beam (M 2≤1.09) and demonstrate ∼200n J Stokes pulse generation at 1712 nm via rotational SRS in pressurized hydrogen (H 2). We believe that the developed system may be a prospect for high-precision material processing and other high-energy and high-peak-power laser applications.
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2
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Li X, Guan Y. Theoretical fundamentals of short pulse laser–metal interaction: A review. NANOTECHNOLOGY AND PRECISION ENGINEERING 2020. [DOI: 10.1016/j.npe.2020.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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3
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Chang G, Wei Z. Ultrafast Fiber Lasers: An Expanding Versatile Toolbox. iScience 2020; 23:101101. [PMID: 32408170 PMCID: PMC7225726 DOI: 10.1016/j.isci.2020.101101] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/14/2020] [Accepted: 04/21/2020] [Indexed: 11/02/2022] Open
Abstract
Ultrafast fiber lasers have gained rapid advances in last decades for their intrinsic merits such as potential of all-fiber format, excellent beam quality, superior power scalability, and high single-pass gain, which opened widespread applications in high-field science, laser machining, precision metrology, optical communication, microscopy and spectroscopy, and modern ophthalmology, to name a few. Performance of an ultrafast fiber laser is well defined by the laser parameters including repetition rate, spectral bandwidth, pulse duration, pulse energy, wavelength tuning range, and average power. During past years, these parameters have been pushed to an unprecedented level. In this paper, we review these enabling technologies and explicitly show that the nonlinear interaction between ultrafast pulses and optical fibers plays the essential role. As a result of rapid development in both active and passive fibers, the toolbox of ultrafast fiber lasers will continue to expand and provide solutions to scientific and industrial problems.
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Affiliation(s)
- Guoqing Chang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China.
| | - Zhiyi Wei
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China; Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.
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Fu W, Herda R, Wise FW. Design guidelines for normal-dispersion fiber optical parametric chirped-pulse amplifiers. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS 2020; 37:1790-1805. [PMID: 34163098 PMCID: PMC8218819 DOI: 10.1364/josab.389445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/21/2020] [Indexed: 06/12/2023]
Abstract
We theoretically investigate methods of controlling pulse generation in normal-dispersion fiber optical parametric chirped-pulse amplifiers. We focus on high-energy, ultrashort pulses at wavelengths widely separated from that of the pump, and find that within this regime, a number of simple properties describe the essential phase and gain dynamics. Of primary importance are the relationships between the chirps of the pump, seed, and parametric gain, which we theoretically predict and then experimentally validate. By properly arranging these parameters, the signal and idler waves can be widely customized to fulfill a remarkable range of application requirements, spanning from narrowband to few-cycle.
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Affiliation(s)
- Walter Fu
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Robert Herda
- TOPTICA Photonics AG, Lochhamer Schlag 19, 82166 Gräfelfing, Germany
| | - Frank W. Wise
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
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Fu W, Tang Y, McComb TS, Lowder TL, Wise FW. Limits of Femtosecond Fiber Amplification by Parabolic Pre-Shaping. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS 2017; 34:A37-A42. [PMID: 28331242 PMCID: PMC5358092 DOI: 10.1364/josab.34.000a37] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We explore parabolic pre-shaping as a means of generating and amplifying ultrashort pulses. We develop a theoretical framework for modeling the technique and use its conclusions to design a femtosecond fiber amplifier. Starting from 9 ps pulses, we obtain 4.3 μJ, nearly transform-limited pulses 275 fs in duration, simultaneously achieving over 40 dB gain and 33-fold compression. Finally, we show that this amplification scheme is limited by Raman scattering, and outline a method by which the pulse duration and energy may be further improved and tailored for a given application.
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Affiliation(s)
- Walter Fu
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Yuxing Tang
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
| | - Timothy S. McComb
- nLIGHT Corporation, 5408 NE 88th Street, Bldg. E, Vancouver, Washington 98665, USA
| | - Tyson L. Lowder
- nLIGHT Corporation, 5408 NE 88th Street, Bldg. E, Vancouver, Washington 98665, USA
| | - Frank W. Wise
- School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
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6
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Pierrot S, Salin F. Amplification and compression of temporally shaped picosecond pulses in Yb-doped rod-type fibers. OPTICS EXPRESS 2013; 21:20484-96. [PMID: 24105592 DOI: 10.1364/oe.21.020484] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report on a new technique to produce high power sub-picosecond pulses from a fiber amplifier. We use parabolic pulse shaping of 27 ps transform-limited pulses in order to control nonlinear effects in the fiber amplifier. 63 MW, 780 fs pulses with 25 W average power were obtained, and ways to scale the technique to higher peak powers were identified.
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7
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Želudevičius J, Danilevičius R, Viskontas K, Rusteika N, Regelskis K. Femtosecond fiber CPA system based on picosecond master oscillator and power amplifier with CCC fiber. OPTICS EXPRESS 2013; 21:5338-5345. [PMID: 23482105 DOI: 10.1364/oe.21.005338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Results of numerical and experimental investigations of the simple fiber CPA system seeded by nearly bandwidth-limited pulses from the picosecond oscillator are presented. We utilized self-phase modulation in a stretcher fiber to broaden the pulse spectrum and dispersion of the fiber to stretch pulses in time. During amplification in the ytterbium-doped CCC fiber, gain-shaping and self-phase modulation effects were observed, which improved pulse compression with a bulk diffraction grating compressor. After compression with spectral filtering, pulses with the duration of 400 fs and energy as high as 50 µJ were achieved, and the output beam quality was nearly diffraction-limited.
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Affiliation(s)
- J Želudevičius
- Department of Laser Technology, Center for Physical Sciences & Technology, Savanoriu Ave 231, Vilnius, Lithuania.
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Fernández A, Jespersen K, Zhu L, Grüner-Nielsen L, Baltuška A, Galvanauskas A, Verhoef AJ. High-fidelity, 160 fs, 5 μJ pulses from an integrated Yb-fiber laser system with a fiber stretcher matching a simple grating compressor. OPTICS LETTERS 2012; 37:927-929. [PMID: 22378441 DOI: 10.1364/ol.37.000927] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Although femtosecond microjoule Yb-fiber systems are attractive because of a straightforward power scalability, they inherently suffer from a lowered pulse fidelity as a result of complex dispersion and nonlinearity management. Here, we present an integrated Yb-fiber system delivering high-fidelity microjoule pulses compressible down to 160 fs. The system uses a dispersion compensating fiber stretcher that is specially designed to match the dispersion of a 1480 lines/mm grating compressor. Performance analysis suggests the further possibility of scaling the pulse energy to tens of microjoules without pulse quality deterioration using this dispersion management scheme.
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Affiliation(s)
- A Fernández
- Institut für Photonik, Technische Universität Wien, Gusshausstrasse 27-29/387, A-1040 Vienna, Austria.
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9
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Li LG, Yan LS, Feng GY, Pan W, Luo B, Yi A, Zhu RL. Distortionless large-ratio stretcher for ultra-short pulses using photonic crystal fiber. OPTICS EXPRESS 2010; 18:12341-12347. [PMID: 20588359 DOI: 10.1364/oe.18.012341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A large-ratio stretcher for ultra-short pulses is proposed based on photonic crystal fiber (PCF). Through proper design of the PCF structure, we obtain over 300-nm wavelength range with flattened dispersion characteristics. Analysis indicates that 1-km of such fiber can broaden over 10,000 times for ultra-short pulses with <100-fs pulse-width. Distortion due to dispersion and nonlinearity is negligible.
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Affiliation(s)
- L-G Li
- Center for Information Photonics & Communications, School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
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10
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Kalaycioglu H, Oktem B, Senel C, Paltani PP, Ilday FO. Microjoule-energy, 1 MHz repetition rate pulses from all-fiber-integrated nonlinear chirped-pulse amplifier. OPTICS LETTERS 2010; 35:959-961. [PMID: 20364183 DOI: 10.1364/ol.35.000959] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We demonstrate generation of pulses with up to 4 microJ energy at 1 MHz repetition rate through nonlinear chirped-pulse amplification in an entirely fiber-integrated amplifier, seeded by a fiber oscillator. The peak power and the estimated nonlinear phase shift of the amplified pulses are as much as 57 kW and 22pi, respectively. The shortest compressed pulse duration of 140 fs is obtained for 3.1 microJ of uncompressed amplifier output energy at 18pi of nonlinear phase shift. At 4 microJ of energy, the nonlinear phase shift is 22pi and compression leads to 170-fs-long pulses. Numerical simulations are utilized to model the experiments and identify the limitations. Amplification is ultimately limited by the onset of Raman amplification of the longer edge of the spectrum with an uncompressible phase profile.
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Affiliation(s)
- H Kalaycioglu
- Physics Department, Bilkent University, Cankaya, Ankara 06800, Turkey.
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Grüner-Nielsen L, Jakobsen D, Jespersen KG, Pálsdóttir B. A stretcher fiber for use in fs chirped pulse Yb amplifiers. OPTICS EXPRESS 2010; 18:3768-3773. [PMID: 20389387 DOI: 10.1364/oe.18.003768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A newly developed fiber for use in pulse stretchers for chirped pulse amplifiers working in the 1 mum wavelength range of Yb fiber amplifiers is reported. The fiber has a record high numerical third order to second order dispersion beta(3)/beta(2) ratio of -7.7 fs. The fiber has very good dispersion match to a grating compressor for second, third, and fourth order dispersion. By combining the stretcher fiber with an anomalous dispersion fiber working in a higher order mode, even higher beta(3)/beta(2) ratio of -16.8 fs is demonstrated. The combined module shows very good dispersion match to a grating compressor.
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Hanna M, Papadopoulos D, Druon F, Georges P. Distributed nonlinear fiber chirped-pulse amplifier system. OPTICS EXPRESS 2009; 17:10835-10840. [PMID: 19550483 DOI: 10.1364/oe.17.010835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A two-stage fiber-based femtosecond amplification system is presented, based on chirped-pulse amplification in highly nonlinear regime. The amount of self-phase modulation is separately adjusted in each stage selecting the proper stretching ratio in order to compensate gain narrowing. Analytical design rules are validated using numerical simulations. Our experimental implementation leads to the generation of high temporal quality 20 microJ 202 fs pulses at repetition rate of 200 kHz, a record duration at this energy level.
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Affiliation(s)
- Marc Hanna
- Institut d'Optique, CNRS, Université Paris-Sud, Palaiseau, France.
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Prawiharjo J, Daga NK, Geng R, Price JH, Hanna DC, Richardson DJ, Shepherd DP. High fidelity femtosecond pulses from an ultrafast fiber laser system via adaptive amplitude and phase pre-shaping. OPTICS EXPRESS 2008; 16:15074-15089. [PMID: 18795045 DOI: 10.1364/oe.16.015074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The generation of high-fidelity femtosecond pulses is experimentally demonstrated in a fiber based chirped-pulse amplification (CPA) system through an adaptive amplitude and phase pre-shaping technique. A pulse shaper, based on a dual-layer liquid crystal spatial light modulator (LC-SLM), was implemented in the fiber CPA system for amplitude and phase shaping prior to amplification. The LC-SLM was controlled using a differential evolution algorithm, to maximize a two-photon absorption detector signal from the compressed fiber CPA output pulses. It is shown that this approach compensates for both accumulated phase from material dispersion and nonlinear phase modulation. A train of pulses was produced with an average power of 12.6W at a 50MHz repetition rate from our fiber CPA system, which were compressible to high fidelity pulses with a duration of 170 fs.
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Affiliation(s)
- Jerry Prawiharjo
- Optoelectronics Research Centre, University of Southampton, Southampton, UK
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14
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Papadopoulos DN, Martial I, Hanna M, Druon F, Georges P. Active spectral phase control by use of an acousto-optic programmable filter in high-repetition-rate sub-80 fs nonlinear fiber amplifiers. OPTICS LETTERS 2008; 33:1431-1433. [PMID: 18594655 DOI: 10.1364/ol.33.001431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report the generation of sub-80 fs pulses with energy in the 100 nJ range at 1050 nm and a repetition rate up to 164 kHz based on a nonlinear fiber amplification system combined with an active control of the spectral phase. This control is performed by an acousto-optic programmable dispersive filter operated at a multiple of its acoustic repetition rate. This result opens up its possible use in highly nonlinear fiber chirped-pulse amplification setups.
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Affiliation(s)
- D N Papadopoulos
- Laboratoire Charles Fabry de l'Institut d'Optique, CNRS, Université Paris Sud, 91127 Palaiseau, France.
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15
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Zaouter Y, Boullet J, Mottay E, Cormier E. Transform-limited 100 microJ, 340 MW pulses from a nonlinear-fiber chirped-pulse amplifier using a mismatched grating stretcher-compressor. OPTICS LETTERS 2008; 33:1527-1529. [PMID: 18594687 DOI: 10.1364/ol.33.001527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report on a compact double-stage ytterbium-doped-fiber chirped-pulse amplifier system delivering high temporal quality 270 fs pulses of 100 microJ energy at a repetition rate of 300 kHz resulting in a peak power of 340 MW. The recompression down to 1.1 times the Fourier limit is based on the exploitation of nonlinear phase shifts associated with mismatched stretcher-compressor units. A 1-m-long ytterbium-doped 80 mum core diameter photonic crystal fiber is implemented as the power amplifier and allows the production of 143 microJ pulses before compression with an accumulated B integral of 17 rad throughout the amplification stages.
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Affiliation(s)
- Y Zaouter
- Centre Lasers Intenses et Applications, Université de Bordeaux 1, CNRS, CEA, 351 cours de Libération, 33405 Talence, France.
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Zhou X, Yoshitomi D, Kobayashi Y, Torizuka K. Generation of 28-fs pulses from a mode-locked ytterbium fiber oscillator. OPTICS EXPRESS 2008; 16:7055-9. [PMID: 18545409 DOI: 10.1364/oe.16.007055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
An ultrashort-pulse, mode-locked ytterbium-doped fiber laser has been developed. The group-delay dispersion was compensated with a grating pair inside the cavity. A broad spectrum from 1000-nm to 1120-nm was obtained without intracavity compensation of third-order dispersion. A 0.7-nJ pulse as short as 28.3 fs was obtained with a repetition rate of 80 MHz. To our knowledge, this is the shortest pulse reported from an Yb fiber laser oscillator.
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Affiliation(s)
- Xiangyu Zhou
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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