Article
Materials Science, Multidisciplinary
Ona Balachninaite, Viktorija Tamuliene, Laurynas Eicas, Virgilijus Vaicaitis
Summary: This paper investigates the ablation of steel and copper using single pulses and bursts of infinite sequences of pulses with a 1 GHz intraburst repetition rate. A model of the ablation process is presented, showing good qualitative agreement between numerical and experimental ablation efficiencies.
RESULTS IN PHYSICS
(2021)
Article
Optics
Yongguang Zhao, Li Wang, Weidong Chen, Pavel Loiko, Xavier Mateos, Xiaodong Xu, Ying Liu, Deyuan Shen, Zhengping Wang, Xinguang Xu, Uwe Griebner, Valentin Petrov
Summary: This study successfully generates ultrashort-pulse Hermite- and Laguerre-Gaussian laser modes with a pulse duration of around 100 fs from a compact solid-state laser in combination with a simple single-cylindrical-lens converter, pushing the advancement of such femtosecond structured laser sources into the 2-mu m spectral region. The negligible beam astigmatism, broad optical spectra, and almost chirp-free pulses highlight the high reliability of this laser source.
PHOTONICS RESEARCH
(2021)
Review
Optics
Jia-Wei Tan, Gong Wang, Yunfei Li, Yu Yu, Qi-Dai Chen
Summary: Micro-optical components have significant potential applications in imaging, optical fiber communication, and aerospace due to their small size, light weight, and flexible design. Fabricating micro-optical components on hard brittle materials is crucial for improving stability and expanding the optical transmission range. This study reviews recent advances in refractive/diffractive micro-optical components using femtosecond laser processing technologies, and summarizes their applications in imaging, sensing, display, and integration, highlighting the challenges and outlook of femtosecond laser processing technologies for micro-optical components.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Nithin Joy, Anne -Marie Kietzig
Summary: This study systematically investigates the surface chemistry changes of Cu substrates caused by femtosecond laser machining LIPSS in different atmospheres and the impact of subsequent exposure conditions on the surface chemistry of Cu substrates laser-machined in an inert Ar atmosphere. Hydroxyl groups on the oxide surface were found to significantly contribute to the chemisorption of carbonaceous species. Samples maintained in humid atmospheres exhibited higher surface carbon content. Laser machining in Ar humidified with a lauric acid-ethanol solution provided the highest C/Cu ratio, while the lowest C/Cu ratio was observed for the sample machined in the inert Ar environment. The decomposition of CO2 into carbon was less favorable under the given exposure conditions (20 degrees C & 150 degrees C), and CO2 behaved inert like Ar. Experiments with acetylene showed the importance of identifying a more reactive carbonaceous gas for providing non-polar carbon to a laser-machined surface. Immersing a laser-machined sample in a carbon-rich solution (lauric acid-ethanol solution) maximizes surface carbon content.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
S. N. C. Santos, K. T. Paula, F. A. Couto, M. H. M. Facure, D. S. Correa, C. R. Mendonca
Summary: This study demonstrates, for the first time, the fabrication of Type II waveguides in transparent silica xerogel using femtosecond laser micromachining. Different modes of the waveguides were confirmed by finite elements simulation and guiding losses were observed to be similar to other materials.
Article
Biochemical Research Methods
Y. Lange Simmons, Kenneth J. Underwood, Omkar D. Supekar, Brendan M. Heffernan, Tarah A. Welton, Emily A. Gibson, Juliet T. Gopinath
Summary: A near-infrared, femtosecond, diode laser-based source with kW peak power for two-photon microscopy was demonstrated, producing sub-ps pulses at a repetition rate of 10 MHz. Integrated with a laser-scanning microscope, the system achieved imaging to a depth of 900 mu m in a fixed sample of mouse brain tissue labeled with PLP-eGFP, marking a significant development in more efficient and compact laser sources for biomedical imaging.
BIOMEDICAL OPTICS EXPRESS
(2021)
Review
Optics
Dong-Ning Wang
Summary: This review discusses the progress of optical fiber high temperature sensors based on femtosecond laser fabricated fiber gratings and various types of fiber in-line interferometers in silica fibers and sapphire fibers.
CHINESE OPTICS LETTERS
(2021)
Article
Optics
Marie -Pier Lord, Michel Olivier, Martin Bernier, Real Vallee
Summary: Femtosecond fiber lasers have been a game changer in laser technology industry, providing high brightness ultrashort pulses in compact, affordable, and reliable setups. This study presents the first femtosecond fiber laser operating in the visible spectrum, expanding the range of applications for such sources. The all-normal dispersion regime passively mode-locked ring cavity is based on nonlinear polarization evolution in a single-mode Pr3+-doped fluoride fiber. The compressed pulses at 635 nm have a duration of 168 fs, a peak power of 0.73 kW, and a repetition rate of 137 MHz.
Article
Optics
Jun Amako, Hidetoshi Nakano
Summary: An achromatic cascade optical system was developed for multifocusing ultrashort pulse beams using a diffractive beam splitter, effectively managing system dispersions and improving focusing resolutions by removing pulse front distortions and chromatic aberrations. The proposed pulse delivery technique enhances materials processing practicality with ultrashort pulses.
Article
Optics
Zichan Wang, Youngsik Kim, Tom D. Milster
Summary: The article discusses the potential applications of large diameter, high-harmonic diffractive lenses in future space telescopes, as well as solutions to reduce chromatic dispersion and other aberrations to achieve diffraction-limited performance. By using a relay subsystem and a color corrector with refractive and diffractive optical elements, longitudinal chromatic aberrations can be significantly reduced while maintaining the effective focal length and numerical aperture of the system.
Article
Optics
Hao Li, Baolai Yang, Meng Wang, Chenhui Gao, Baiyi Wu, Lingfa Zeng, Xiaoming Xi, Zilun Chen, Xiaolin Wang, Zefeng Wang, Jinbao Chen
Summary: In this paper, a fs-laser phase mask inscription system based on a galvanometer scanning strategy is designed to fabricate large-core fiber Bragg gratings (FBGs). The performance of the fabricated FBGs is investigated using a high-power all-fiber oscillator, achieving a maximum output power of 7920 W and an optical-optical conversion efficiency of 77.3%. This work provides a flexible, stable, and economic scanning strategy for large-core FBG inscription and exhibits excellent performance for high-power fiber lasers.
Article
Optics
Tian-Wei Wang, Xian-Zi Dong, Feng Jin, Yuan-Yuan Zhao, Xiang-Yang Liu, Mei-Ling Zheng, Xuan-Ming Duan
Summary: This study investigates the precise modulation of gap width in maskless lithography using a digital micromirror device (DMD). The relationship between structure morphology and light intensity distribution is analyzed, and the gap width is optimized by modulating exposure energy. The aperture diameter of the objective lens is found to have a substantial effect on pattern consistency. The study also proposes an alternative method for achieving fine gap structures through structural decomposition design and precise control of exposure energy. This research provides a promising protocol for fabricating controllable gap microstructures using maskless lithography.
Review
Nanoscience & Nanotechnology
Giacomo Corrielli, Andrea Crespi, Roberto Osellame
Summary: Integrated quantum photonics, utilizing technologies like femtosecond laser micromachining, is revolutionizing the field of quantum information by enabling the complete production of quantum systems components. In the past five years, FLM has significantly expanded its range of quantum applications and achieved several scientific breakthroughs.
Article
Nanoscience & Nanotechnology
Zheng Xiong, Arun Poudel, Ameya R. Narkar, Zhe Zhang, Puskal Kunwar, James H. Henderson, Pranav Soman
Summary: In this study, the authors propose a new method called femtosecond (fs) laser-induced densification to generate diffractive gratings within hydrogel materials. By controlling the parameters of the fs laser, custom volume gratings can be fabricated within the hydrogel. The method is also demonstrated to be applicable to pH-responsive hydrogels.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Analytical
Agne Butkute, Linas Jonusauskas
Summary: The rapid expansion of femtosecond laser technology has enabled significant advances in the 3D processing of transparent materials, leading to the production of high-precision structures like nanophotonic elements and microfluidic systems. This review discusses the underlying physical mechanism of material interaction with ultrashort pulses, its applications in 3D processing, and possible limitations. Further directions for field development, including synergies with other fs-laser-based manufacturing techniques, are highlighted.
Article
Optics
Y. Jauregui-Sanchez, P. Clemente, J. Lancis, E. Tajahuerce
Article
Multidisciplinary Sciences
Miguel Carbonell-Leal, Omel Mendoza-Yero
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2019)
Article
Optics
Miguel Carbonell-Leal, Gladys Minguez-Vega, Jesus Lancis, Omel Mendoza-Yero
Article
Chemistry, Physical
Wycliffe Kiprop Kipnusu, Carlos Donate-Buendia, Mercedes Fernandez-Alonso, Jesus Lancis, Gladys Minguez-Vega
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
(2020)
Article
Multidisciplinary Sciences
Ivo M. Pinatti, Amanda F. Gouveia, C. Donate-Buendia, Gladys Minguez-Vega, Juan Andres, Elson Longo
SCIENTIFIC REPORTS
(2020)
Article
Thermodynamics
Alexandra Gimeno-Furio, Raul Martinez-Cuenca, Rosa Mondragon, Antonio Fabian Vela Gasulla, Carlos Donate-Buendia, Gladys Minguez-Vega, Leonor Hernandez
Article
Chemistry, Physical
Rafael Omar Torres-Mendieta, Mayara Mondego Teixeira, Gladys Minguez-Vega, Daniele de Souza, Yara Galvao Gobato, Marcelo Assis, Hector Beltran-Mir, Eloisa Cordoncillo, Juan Andres, Miroslav Cernik, Elson Longo
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Multidisciplinary Sciences
Paula Fabiana Santos Pereira, Ana Carolina Alves de Paula e Silva, Bruna Natalia Alves da Silva Pimentel, Ivo Mateus Pinatti, Alexandre Zirpoli Simoes, Carlos Eduardo Vergani, Debora Ferreira Barreto-Vieira, Marcos Alexandre Nunes da Silva, Milene Dias Miranda, Maria Eduarda Santos Monteiro, Amanda Tucci, Carlos Donate-Buendia, Gladys Minguez-Vega, Juan Andres, Elson Longo
Summary: This study reports the synthesis of chitosan/alpha-Ag2WO4 composites using femtosecond laser irradiation, which exhibit antimicrobial activity against bacteria and yeast, as well as the ability to inactivate SARS-CoV-2 virus. The composites show good biocompatibility with keratinocyte cells and are non-cytotoxic. The results suggest that these composites are highly efficient materials for killing microorganisms and inactivating SARS-CoV-2.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Iris Elvira, Andres Puerto, Gladys Minguez-Vega, Adrian Rodriguez-Palomo, Alejandro Gomez-Tornero, Angel Garcia-Cabanes, Mercedes Carrascosa
Summary: This work presents a simple strategy to obtain Au plasmonic patterns by optically induced nanoparticle assembly and demonstrates their application as fluorescence enhancement platforms. The spatial distribution and size of the assembled nanoparticles can be controlled, and the 170-nm patterns show better plasmonic behavior, making them promising candidates for efficient bio-imaging and biosensing techniques.
Article
Chemistry, Analytical
David Benedicto, Maria Victoria Collados, Juan C. Martin, Jesus Atencia, Omel Mendoza-Yero, Juan A. Valles
Summary: This paper introduces a method for modal decomposition of light and discusses several aspects for optimizing this method. Firstly, a filter size adjustment method based on fiber mode symmetry is proposed. Then, the influence of mode normalization on noise is investigated. Finally, a method for measuring the phase difference between modes is proposed.
Proceedings Paper
Materials Science, Biomaterials
A. Puerto, C. Lopez-Fernandez, J. L. Bella, I Elvira, G. Minguez-Vega, A. Garcia-Cabanes, M. Carrascosa
Summary: Utilizing ferroelectric platforms based on photovoltaic LiNbO3:Fe, metallic structures have been assembled from Ag and Au nanoparticles on the surface of the crystal, resulting in plasmonic enhancement for bio-imaging procedures. The fluorescence enhancement of biomaterials tagged with various fluorophores has been investigated, with potential applications for improving bio-imaging. Furthermore, metal nanoparticle patterns are found to induce organization of sperm cells along the nanoparticle fringe structures.
OPTICAL METHODS FOR INSPECTION, CHARACTERIZATION, AND IMAGING OF BIOMATERIALS V
(2021)
Article
Optics
Omel Mendoza-Yero
Proceedings Paper
Engineering, Electrical & Electronic
C. Donate-Buendia, R. Torres-Mendieta, A. Pyatenko, E. Falomir, M. Fernandez-Alonso, G. Minguez-Vega
SYNTHESIS AND PHOTONICS OF NANOSCALE MATERIALS XVI
(2019)
Article
Chemistry, Physical
P. S. Lemos, G. S. Silva, R. A. Roca, M. Assis, R. Torres-Mendieta, H. Beltran-Mir, G. Minguez-Vega, E. Cordoncillo, J. Andres, E. Longo
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Nanoscience & Nanotechnology
Nadia G. Macedo, Thales R. Machado, Roman A. Roca, Marcelo Assis, Camila Cristina Foggi, Veronica Puerto-Belda, Gladys Minguez-Vega, Andre Rodrigues, Miguel A. San-Miguel, Eloisa Cordoncillo, Hector Beltran-Mir, Juan Andres, Elson Longo
ACS APPLIED BIO MATERIALS
(2019)
