Direct writing of Volume and Surface Gratings with Sub-micron Periods in Fused Silica.

1993 ◽  
Author(s):  
J. Albert ◽  
K. O. Hill ◽  
B. Malo ◽  
D. C. Johnson ◽  
I. M. Templeton ◽  
...  
Keyword(s):  
Fused Silica ◽  
Direct Writing

Waveguide electro-optic modulator in fused silica fabricated by femtosecond laser direct writing and thermal poling

2006 ◽  
Vol 31 (6) ◽  
pp. 739 ◽  
Author(s):  
Guangyu Li ◽  
Kim A. Winick ◽  
Ali A. Said ◽  
Mark Dugan ◽  
Philippe Bado
Keyword(s):  
Femtosecond Laser ◽  
Fused Silica ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Thermal Poling ◽  
Electro Optic ◽  
Electro Optic Modulator

scholarly journals Femtosecond laser one-step direct-writing cylindrical microlens array on fused silica

2017 ◽  
Vol 42 (12) ◽  
pp. 2358 ◽  
Author(s):  
Zhi Luo ◽  
Ji’an Duan ◽  
Chunlei Guo
Keyword(s):  
Femtosecond Laser ◽  
Microlens Array ◽  
Fused Silica ◽  
Direct Writing ◽  
One Step

scholarly journals Large-Area Fabrication of Laser-Induced Periodic Surface Structures on Fused Silica Using Thin Gold Layers

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1187 ◽  
Author(s):  
Clemens Kunz ◽  
Sebastian Engel ◽  
Frank Müller ◽  
Stephan Gräf
Keyword(s):  
Fused Silica ◽  
Surface Structures ◽  
Spatial Period ◽  
Direct Writing ◽  
Large Area ◽  
Periodic Surface ◽  
Single Spot ◽  
Research Activities ◽  
Wide Range ◽  
Fs Laser

Despite intensive research activities in the field of laser-induced periodic surface structures (LIPSS), the large-area nanostructuring of glasses is still a challenging problem, which is mainly caused by the strongly non-linear absorption of the laser radiation by the dielectric material. Therefore, most investigations are limited to single-spot experiments on different types of glasses. Here, we report the homogeneous generation of LIPSS on large-area surfaces of fused silica using thin gold layers and a fs-laser with a wavelength λ = 1025 nm, a pulse duration τ = 300 fs, and a repetition frequency frep = 100 kHz as radiation source. For this purpose, single-spot experiments are performed to study the LIPSS formation process as a function of laser parameters and gold layer thickness. Based on these results, the generation of large-area homogenous LIPSS pattern was investigated by unidirectional scanning of the fs-laser beam across the sample surface using different line spacing. The nanostructures are characterized by a spatial period of about 360 nm and a modulation depth of around 160 nm. Chemical surface analysis by Raman spectroscopy confirms a complete ablation of the gold film by the fs-laser irradiation. The characterization of the functional properties shows an increased transmission of the nanostructured samples accompanied by a noticeable change in the wetting properties, which can be additionally modified within a wide range by silanization. The presented approach enables the reproducible LIPSS-based laser direct-writing of sub-wavelength nanostructures on glasses and thus provides a versatile and flexible tool for novel applications in the fields of optics, microfluidics, and biomaterials.

Direct writing of electronic and sensor materials using a laser transfer technique

2000 ◽  
Vol 15 (9) ◽  
pp. 1872-1875 ◽  
Author(s):  
A. Piqué ◽  
D. B. Chrisey ◽  
J. M. Fitz-Gerald ◽  
R. A. McGill ◽  
R. C. Y. Auyeung ◽  
...  
Keyword(s):  
Fused Silica ◽  
Laser Evaporation ◽  
Direct Write ◽  
Metal Powders ◽  
Direct Writing ◽  
Ceramic Powders ◽  
Composite Matrix ◽  
Laser Transfer ◽  
Matrix Surface ◽  
The Matrix

We present a laser-based direct write technique termed matrix-assisted pulsed-laser evaporation direct write (MAPLE DW). This technique utilizes a laser transparent fused silica disc coated on one side with a composite matrix consisting of the material to be deposited mixed with a laser absorbing polymer. Absorption of laser radiation results in the decomposition of the polymer, which aids in transferring the solute to an acceptor substrate placed parallel to the matrix surface. Using MAPLE DW, complex patterns consisting of metal powders, ceramic powders, and polymer composites were transferred onto the surfaces of various types of substrates with <10 micron resolution at room temperature and at atmospheric pressure without the use of masks.

Single-Step Microstructure Patterning in Titania-Doped Sol-Gel Glassy Thin Films with Electron Beams

2004 ◽  
Vol 847 ◽  
Author(s):  
Xinshi Luo ◽  
Congji Zha ◽  
Barry Luther-Davies
Keyword(s):  
Thin Films ◽  
Optical Waveguides ◽  
Electron Beams ◽  
Uv Light ◽  
Sol Gel ◽  
Fused Silica ◽  
Single Step ◽  
Direct Writing ◽  
Silica Network ◽  
Good Thermal Stability

ABSTRACTTo achieve a simplified microstructure patterning process, patterning in thin films with a singlestep exposure to UV-light or E-beam process for fabrication of integrated optical waveguides and components is of great interest in optics, because the complicated structure developing stage by wet chemical or plasma etching is not required. In this paper, we describe our study on the microstructure patterning in TiO2-doped hybrid glassy polymer thin films by irradiating with focused E-beam. An anhydrous sol-gel process based on hydrolysis and condensation of metal alkoxides with boric acid under non-hydrous conditions was applied to homogeneously incorporating TiO2into silica network, and transparent glassy TiO2-doped thin films with varied TiO2concentrations (up to 40 mol%) were prepared by spin coating the hybrid polymer onto fused silica substrates and silicon wafers. The TiO2-doped hybrid material showed a low OH absorption, low optical losses at the telecommunication windows (<0.40 dB/cm at 1550 nm and <0.20 dB/cm at 1310 nm respectively), good thermo-optical linearity and good thermal stability up to 200 °C. Single-step direct surface patterning in the TiO2-doped hybrid glassy films with focused electron beams irradiation showed that fine structure with resolution at submicron level can be fabricated. As the process does not need a developing (etching) process, the profiles of the lines fabricated by the E-beam direct writing showed few distortion. The high precise patterning microstructure with submicron feature sizes in the TiO2-doped hybrid glassy thin films may provide potentials for applications to the fabrication of optical gratings.

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