Femtosecond laser micro-structuring of air-disk mirrors in glass for out-of-plane waveguide coupling in silicon photonic packaging

2021 ◽  
Author(s):  
Gligor Djogo ◽  
Amir Rahimnouri ◽  
Stephen Ho ◽  
Jianzhao Li ◽  
Peter R. Herman
Keyword(s):  
Femtosecond Laser ◽  
Plane Waveguide ◽  
Silicon Photonic ◽  
Out Of Plane ◽  
Waveguide Coupling ◽  
Micro Structuring

Femtosecond Laser-Induced Micro-Structuring of Thin a-Si:H Films

2004 ◽  
Vol 850 ◽  
Author(s):  
Barada K. Nayak ◽  
Mool C. Gupta
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Femtosecond Laser ◽  
Light Trapping ◽  
Surface Texturing ◽  
Textured Surface ◽  
Near Ir ◽  
Atomic Force ◽  
Micro Structuring ◽  
Scanning Electron

ABSTRACTIn a-Si:H solar cells, light trapping has been sought as a method to enhance absorption and improve the efficiencies of these devices. Here we present results for surface texturing of 2μm thick a-Si:H films by 800 nm wavelength femtosecond laser. The texture led to a significant enhancement in optical absorption (80%) in visible through near IR (60%). The textured surface was examined by a scanning electron microscope (SEM) and atomic force microscope (AFM). The results indicated the formation of dense spikes with height of 65–75 nm. The samples were completely black after femtosecond laser treatment.

Femtosecond laser micro-structuring of alumina ceramic

2005 ◽  
Vol 248 (1-4) ◽  
pp. 213-217 ◽  
Author(s):  
W. Perrie ◽  
A. Rushton ◽  
M. Gill ◽  
P. Fox ◽  
W. O’Neill
Keyword(s):  
Femtosecond Laser ◽  
Alumina Ceramic ◽  
Micro Structuring

Cavity-Waveguide Coupling Engineered High Sensitivity Silicon Photonic Crystal Microcavity Biosensors With High Yield

2014 ◽  
Vol 20 (4) ◽  
pp. 171-180 ◽  
Author(s):  
Yi Zou ◽  
Swapnajit Chakravarty ◽  
David N. Kwong ◽  
Wei-Cheng Lai ◽  
Xiaochuan Xu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
High Sensitivity ◽  
High Yield ◽  
Silicon Photonic ◽  
Waveguide Coupling ◽  
Photonic Crystal Microcavity

scholarly journals Postfabrication Phase Error Correction of Silicon Photonic Circuits by Single Femtosecond Laser Pulses

2017 ◽  
Vol 35 (4) ◽  
pp. 588-595 ◽  
Author(s):  
Daniel Bachman ◽  
Zhijiang Chen ◽  
Christopher Wang ◽  
Robert Fedosejevs ◽  
Ying Y. Tsui ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Error Correction ◽  
Phase Error ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Photonic Circuits ◽  
Silicon Photonic

Femtosecond Laser Micro-structuring Of Transparent Materials And Its Ophthalmologic Applications

2010 ◽  
Author(s):  
Andrey A. Ionin ◽  
Svetlana E. Kozhushko ◽  
Sergey I. Kudryashov ◽  
Leonid V. Seleznev ◽  
Dmitry V. Sinitsyn ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Transparent Materials ◽  
Micro Structuring

Femtosecond laser micro-structuring of materials in the nir and UV regime

2007 ◽  
Author(s):  
D. Liu ◽  
J. Cheng ◽  
W. Perrie ◽  
A. Baum ◽  
P. Scully ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Micro Structuring

scholarly journals Magnetization Switching in the GdFeCo Films with In-Plane Anisotropy via Femtosecond Laser Pulses

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6406
Author(s):  
Daria O. Ignatyeva ◽  
Pavel O. Kapralov ◽  
Kiran Horabail Prabhakara ◽  
Hiroki Yoshikawa ◽  
Arata Tsukamoto ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Metal Alloys ◽  
Magnetization Switching ◽  
Small Magnetic Field ◽  
Plane Anisotropy ◽  
All Optical ◽  
Out Of Plane

Ferrimagnetic rare-earth substituted metal alloys GdFeCo were shown to exhibit the phenomenon of all-optical magnetization switching via femtosecond laser pulses. All-optical magnetization switching has been comprehensively investigated in out-of-plane magnetized GdFeCo films; however, the films with the in-plane magnetic anisotropy have not yet been studied in detail. We report experimental observations of the magnetization switching of in-plane magnetized GdFeCo films by means of the femtosecond laser pulses in the presence of a small magnetic field of about 40 µT. The switching effect has a threshold both in the applied magnetic field and in the light intensity.

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