Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens

2020 ◽  
Vol 18 (9) ◽  
pp. 093201
Author(s):  
Kaiqiang Cao ◽  
Long Chen ◽  
Ke Cheng ◽  
Zhenrong Sun ◽  
Tianqing Jia
Keyword(s):  
Femtosecond Laser ◽  
Cylindrical Lens ◽  
Laser Beams ◽  
Large Area

scholarly journals Direct fabricating large-area nanotriangle structure arrays on tungsten surface by nonlinear lithography of two femtosecond laser beams

2018 ◽  
Vol 26 (9) ◽  
pp. 11718 ◽  
Author(s):  
Qi Liu ◽  
Nan Zhang ◽  
Jianjun Yang ◽  
Hongzhen Qiao ◽  
Chunlei Guo
Keyword(s):  
Femtosecond Laser ◽  
Laser Beams ◽  
Large Area ◽  
Tungsten Surface

Temporally shaped Laguerre–Gaussian femtosecond laser beams

2018 ◽  
Vol 57 (13) ◽  
pp. 3624 ◽  
Author(s):  
Tom Bolze ◽  
Patrick Nuernberger
Keyword(s):  
Femtosecond Laser ◽  
Laser Beams

Maskless formation of uniform subwavelength periodic surface structures by double temporally-delayed femtosecond laser beams

2019 ◽  
Vol 471 ◽  
pp. 516-520 ◽  
Author(s):  
Sohail A. Jalil ◽  
Jianjun Yang ◽  
Mohamed ElKabbash ◽  
Subhash C. Singh ◽  
Chunlei Guo
Keyword(s):  
Femtosecond Laser ◽  
Surface Structures ◽  
Laser Beams ◽  
Periodic Surface

scholarly journals Stimulated Raman Microscopy Implemented by Three Femtosecond Laser Sources

2021 ◽  
Vol 255 ◽  
pp. 06003
Author(s):  
Rajeev Ranjan ◽  
Maria Antonietta Ferrara ◽  
Luigi Sirleto
Keyword(s):  
Femtosecond Laser ◽  
Stimulated Raman Scattering ◽  
Second Harmonic ◽  
Laser Beams ◽  
Raman Gain ◽  
Harmonic Generator ◽  
Second Harmonic Generator ◽  
Laser Sources ◽  
Fingerprint Region ◽  
Stimulated Raman

In this work, the implementation of a femtosecond Stimulated Raman Scattering microscope, equipped with three femtosecond laser sources: a Titanium-Sapphire (Ti:Sa), an optical parametric oscillator (OPO), and a second harmonic generator (SHG); is presented. Our microscope is designed so that it can cover all the regions of Raman spectra, taking advantage of two possible laser combinations. The first, Ti:Sa and OPO laser beams, which cover the C-H region (>2800 cm-1 ) in stimulated Raman gain (SRG) modality, whereas the second, Ti:Sa and SHG laser beams, covering the C-H region and the fingerprint region in stimulated Raman losses (SRL) modality. The successful realization of the microscope is demonstrated, reporting images of polystyrene beads using both SRL and SRG modalities.

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