Photoluminescence in hexagonal silicon carbide by direct femtosecond laser writing

2018 ◽  
Vol 43 (24) ◽  
pp. 6077 ◽  
Author(s):  
S. Castelletto ◽  
A. F. M. Almutairi ◽  
K. Kumagai ◽  
T. Katkus ◽  
Y. Hayasaki ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Femtosecond Laser ◽  
Laser Writing

High-speed processing of silicon carbide ceramic by high repetition frequency femtosecond laser

2021 ◽  
Author(s):  
Jian Zhang ◽  
Feng Geng ◽  
Zhichao Liu ◽  
Qinghua Zhang ◽  
Qiao Xu ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Femtosecond Laser ◽  
High Speed ◽  
Repetition Frequency ◽  
Silicon Carbide Ceramic ◽  
High Repetition

scholarly journals Low-repetition rate femtosecond laser writing of optical waveguides in KTP crystals: analysis of anisotropic refractive index changes

2015 ◽  
Vol 23 (12) ◽  
pp. 15343 ◽  
Author(s):  
Muhammad Ali Butt ◽  
Huu-Dat Nguyen ◽  
Airán Ródenas ◽  
Carolina Romero ◽  
Pablo Moreno ◽  
...  
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Repetition Rate ◽  
Optical Waveguides ◽  
Laser Writing ◽  
Index Changes

scholarly journals Electro–optical tunable waveguide embedded multiscan Bragg gratings in lithium niobate by direct femtosecond laser writing

2014 ◽  
Vol 22 (19) ◽  
pp. 23339 ◽  
Author(s):  
Sebastian Kroesen ◽  
Wolfgang Horn ◽  
Jörg Imbrock ◽  
Cornelia Denz
Keyword(s):  
Lithium Niobate ◽  
Femtosecond Laser ◽  
Bragg Gratings ◽  
Laser Writing ◽  
Tunable Waveguide

scholarly journals Mid-infrared waveguiding in three-dimensional microstructured optical waveguides fabricated by femtosecond-laser writing and phosphoric acid etching

2020 ◽  
Vol 8 (3) ◽  
pp. 257 ◽  
Author(s):  
Jinman Lv ◽  
Binbin Hong ◽  
Yang Tan ◽  
Feng Chen ◽  
Javier Rodríguez Vázquez de Aldana ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Phosphoric Acid ◽  
Optical Waveguides ◽  
Three Dimensional ◽  
Acid Etching ◽  
Laser Writing ◽  
Mid Infrared ◽  
Phosphoric Acid Etching

Electronic Properties of Femtosecond Laser Induced Modified Spots on Single Crystal Silicon Carbide

2010 ◽  
Vol 645-648 ◽  
pp. 239-242 ◽  
Author(s):  
Takuro Tomita ◽  
M. Iwami ◽  
M. Yamamoto ◽  
M. Deki ◽  
Shigeki Matsuo ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Femtosecond Laser ◽  
Single Crystal ◽  
Specific Resistance ◽  
Single Crystal Silicon ◽  
Metal Contacts ◽  
Crystal Silicon ◽  
Current Voltage ◽  
Fs Laser ◽  
Current Voltage Characteristics

Femtosecond (fs) laser modification on single crystal silicon carbide (SiC) was studied from the viewpoints of electric conductivity. Fourier transform infrared (FTIR) spectroscopy was carried out on femtosecond laser modified area. The intensity decrease of reststrahlen band due to the modification was observed, and this decrease was explained by the degradation of crystallinity due to the laser irradiation. Polarization dependence of reststrahlen band was also observed on laser modified samples. Current-voltage characteristics and Hall measurements on fs-laser modified region were carried out by fabricating the metal contacts on the ion implanted areas. The specific resistance up to 5.9×10-2 m was obtained for fs-laser modified area.

Optical spectroscopy in channel waveguides made in Nd:YAG crystals by femtosecond laser writing

2008 ◽  
Vol 128 (5-6) ◽  
pp. 754-756 ◽  
Author(s):  
G.A. Torchia ◽  
C. Méndez ◽  
L. Roso ◽  
J.O. Tocho
Keyword(s):  
Femtosecond Laser ◽  
Optical Spectroscopy ◽  
Laser Writing ◽  
Channel Waveguides ◽  
Made In

scholarly journals Femtosecond Laser Written Depressed-Cladding Waveguide 2 × 2, 1 × 2 and 3 × 3 Directional Couplers in Tm3+:YAG Crystal

Micromachines ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 1 ◽  
Author(s):  
Nikolay Skryabin ◽  
Alexander Kalinkin ◽  
Ivan Dyakonov ◽  
Sergei Kulik
Keyword(s):  
Femtosecond Laser ◽  
Single Mode ◽  
Integrated Photonics ◽  
Beam Splitting ◽  
Directional Couplers ◽  
Laser Writing

Ion-doped crystal-based compact devices capable of beam splitting and coupling are enthralling for a broad range of classical and quantum integrated photonics applications. In this work, we report on the fabrication of depressed-cladding waveguide 2D 2 × 2, 1 × 2 and 3D 3 × 3 directional couplers in Tm 3 + :YAG crystal by femtosecond laser writing. The performances of the couplers are characterized at 810 nm, showing single-mode guidance, polarization independence, finely matched splitting ratios. These results open up new opportunities in the beneficial fabrication of 3D circuits and devices in crystals.

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