Femtosecond laser-pumped plasmonically enhanced near-infrared random laser based on engineered scatterers

2017 ◽  
Vol 42 (23) ◽  
pp. 5002 ◽  
Author(s):  
Venkata Siva Gummaluri ◽  
Radhika V. Nair ◽  
S. R. Krishnan ◽  
C. Vijayan
Keyword(s):  
Femtosecond Laser ◽  
Near Infrared ◽  
Random Laser

scholarly journals Antireflective and Superhydrophilic Structure on Graphite Written by Femtosecond Laser

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 236
Author(s):  
Rui Lou ◽  
Guangying Li ◽  
Xu Wang ◽  
Wenfu Zhang ◽  
Yishan Wang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Near Infrared ◽  
High Efficiency ◽  
Electronic Devices ◽  
Sample Surface ◽  
Graphite Surface ◽  
Hazardous Substances ◽  
Functional Surface ◽  
Nano Structures ◽  
Average Reflectance

Antireflection and superhydrophilicity performance are desirable for improving the properties of electronic devices. Here, we experimentally provide a strategy of femtosecond laser preparation to create micro-nanostructures on the graphite surface in an air environment. The modified graphite surface is covered with abundant micro-nano structures, and its average reflectance is measured to be 2.7% in the ultraviolet, visible and near-infrared regions (250 to 2250 nm). The wettability transformation of the surface from hydrophilicity to superhydrophilicity is realized. Besides, graphene oxide (GO) and graphene are proved to be formed on the sample surface. This micro-nanostructuring method, which demonstrates features of high efficiency, high controllability, and hazardous substances zero discharge, exhibits the application for functional surface.

scholarly journals Regulating disordered plasmonic nanoparticles into polarization sensitive metasurfaces

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shulei Li ◽  
Mingcheng Panmai ◽  
Shaolong Tie ◽  
Yi Xu ◽  
Jin Xiang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Metallic Nanoparticles ◽  
Near Infrared ◽  
Optical Memory ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Optical Diffraction ◽  
Plasmonic Nanoparticles ◽  
Direct Laser

Abstract Metasurfaces composed of regularly arranged and deliberately oriented metallic nanoparticles can be employed to manipulate the amplitude, phase and polarization of an incident electromagnetic wave. The metasurfaces operating in the visible to near infrared spectral range rely on the modern fabrication technologies which offer a spatial resolution beyond the optical diffraction limit. Although direct laser writing is an alternative to the fabrication of nanostructures, the achievement of regular nanostructures with deep-subwavelength periods by using this method remains a big challenge. Here, we proposed and demonstrated a novel strategy for regulating disordered plasmonic nanoparticles into nanogratings with deep-subwavelength periods and reshaped nanoparticles by using femtosecond laser pulses. The orientations of the nanogratings depend strongly on the polarization of the femtosecond laser light. Such nanogratings exhibit reflection and polarization control over the reflected light, enabling the realization of polarization sensitive optical memory and color display with high spatial resolution and good chromacity.

Multiphoton Near-Infrared Femtosecond Laser Pulse-Induced DNA Damage With and Without the Photosensitizer Proflavine

2008 ◽  
Vol 69 (3) ◽  
pp. 265-274
Author(s):  
Vladimir Shafirovich ◽  
Alexander Dourandin ◽  
Natalia P. Luneva ◽  
Carolyn Singh ◽  
Francis Kirigin ◽  
...  
Keyword(s):  
Dna Damage ◽  
Laser Pulse ◽  
Femtosecond Laser ◽  
Femtosecond Laser Pulse ◽  
Near Infrared

Near-infrared femtosecond laser-induced crystallization of amorphous silicon

2004 ◽  
Vol 85 (7) ◽  
pp. 1232-1234 ◽  
Author(s):  
Jia-Min Shieh ◽  
Zun-Hao Chen ◽  
Bau-Tong Dai ◽  
Yi-Chao Wang ◽  
Alexei Zaitsev ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Amorphous Silicon ◽  
Near Infrared ◽  
Induced Crystallization

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

2010 ◽  
Vol 496 (1-2) ◽  
pp. 488-493 ◽  
Author(s):  
Qiang Lü ◽  
Yingjun Wu ◽  
Lurong Ding ◽  
Guomei Zu ◽  
Aihua Li ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Near Infrared ◽  
Upconversion Luminescence

scholarly journals Near-Infrared Switching of Light-Guided Random Laser

2018 ◽  
Vol 10 (5) ◽  
pp. 1-7 ◽  
Author(s):  
Sreekanth Perumbilavil ◽  
Martti Kauranen ◽  
Gaetano Assanto
Keyword(s):  
Near Infrared ◽  
Random Laser
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