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Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVI
Abstract
The papers included in this volume were part of the technical conference cited on the cover and title page. Papers were selected and subject to review by the editors and conference program committee. Some conference presentations may not be available for publication. The papers published in these proceedings reflect the work and thoughts of the authors and are published herein as submitted. The publisher is not responsible for the validity of the information or for any outcomes resulting from reliance thereon.
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We present time-resolved measurements of pulse transmission at wavelength 532 nm (60 ps pulse width, 10 Hz repetition rate) on samples of titanium powders suspended in methanol. The average particle diameter of the powders is 80 nm. We used a streak camera with 2 ps time revolution to record the transmitted signals. When the particle density is low, the results agreed with the diffusion theory and we obtained the time-independent diffusion constants. By adding the titanium powders gradually in methanol, we obtained the relationship between the diffusion constant and the particle density of TiO2 in the suspended solution. When using the TiO2 powders as the sample with a particle density of 1.36x1015 cm-3, the experimental result showed a little deviation from the diffusion theory, which may be the signature of localization in the random media.
Femtosecond laser processing acquires futures of high throughput and
high light-use efficiency by using a computer-generated hologram. In the
holographic femtosecond laser processing, a precise control of
diffraction peaks is indispensable to fabricate enormous numbers of
nanometer-scale structures simultaneously. The computer-optimized
hologram has high uniformity of the diffraction peaks in the computer
reconstruction. However, the uniformity decreases due to spatial and
temporal properties of the optical system. We propose some optimization
methods of the hologram to improve the uniformity and demonstrate the
processing performance.
Japan) 7201 1G Inflection point of the spectral shifts of the random lasing in dye solution showing transformation to weak localization
- N Miyanaga
- Osaka Univ
N. Miyanaga, Osaka Univ.
(Japan)
7201 1G
Inflection point of the spectral shifts of the random lasing in dye solution showing
transformation to weak localization [7201-51]
Univ. of Ottawa (Canada) 7201 1I Laser polishing of vidicon's glass substrates
- X Bao
X. Bao, Univ.
of Ottawa (Canada)
7201 1I
Laser polishing of vidicon's glass substrates [7201-53]
The Institute of Physical and Chemical Research (Japan)
- Koji Sugioka
Koji Sugioka, The Institute of Physical and Chemical Research (Japan)