NIP REPORT January 2006- May 2007 - The UP College of Science ...

2. “The Nitrogen Raman Shifter – a Multicolor and Picosecond Light Source,” L. Ramirez, G.
Manahan, E. Reyes, M. Torres and W. Garcia. 27 th APAMS : 2007 International S & T
Conference, Annual Philippine – American Academy of Science and Engineering Meeting &
Symposium, De La Salle University – Manila and Century Park Hotel – Manila, Philippines, 15
to 17 Feb. 2007 (ISSN : 1908 – 5907)
3. “A Broadband Light Source from a Femtosecond Laser-Pumped Nonlinear Photonic Crystal
Fiber,” J. Gabayno, F. Catalan, C. Alonzo and W. Garcia. 27 th APAMS : 2007 International S &
T Conference, Annual Philippine – American Academy of Science and Engineering Meeting &
Symposium, De La Salle University – Manila and Century Park Hotel – Manila, Philippines, 15
to 17 Feb. 2007 (ISSN : 1908 – 5907)
4. “Laser – Induced Breakdown Spectroscopy in Air and in Water for Trace Element,”
Detection,” M. Francisco, P. Arevalo, F. Ebreo, M. Paguio and W. Garcia, 27 th APAMS : 2007
International S & T Conference, Annual Philippine – American Academy of Science and
Engineering Meeting & Symposium, De La Salle University – Manila and Century Park Hotel –
Manila, Philippines, 15 to 17 Feb. 2007 (ISSN : 1908 – 5907)
5. “Wavefront phase and amplitude reconstruction techniques using multiple intensities,” P.
Almoro, G. Pedrini, and W. Osten, SPECKLES 2006 (plenary presentation), Nimes, France,
September 13-15, 2006. (Partially funded using postdoctoral grant, U.P. Faculty Development
Program)
Grants
OVCRD Outright Research grant (March 2007)
Wavefront sensing with random amplitude mask and phase retrieval
Abstract: A new practical method for wavefront sensing using a random amplitude mask and a
phase retrieval method based on the wave propagation equation is described. The proposed
inexpensive wavefront sensor has a resolution of half the laser wavelength (0.315 µm). The
proposed sensor has many potential applications such as measurement and correction of lens
aberration for astronomy and ophthalmology. The proposed sensor can also applied for phase
contrast imaging of microscopic specimens, 3D shape and photo-elastic measurements for
industrial non-destructive testing.
Personnel: Percival Almoro (Proponent)
Margarette Maallo, BS student (Research Assistant)
Research projects
“Generation, characterization and applications of laser produced plasma”
W. Garcia
The interaction of a high energy laser pulse with matter results in the generation of a plasma.
This project will investigate the characteristics of the plasma and its possible applications.
“Wavefront sensing with random amplitude mask and phase retrieval,”
P. Almoro
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