Self‐defocusing of pulsed light beams

1976 ◽  
Vol 47 (4) ◽  
pp. 1467-1471 ◽  
Author(s):  
B. Steverding
Keyword(s):  
Pulsed Light ◽  
Light Beams

Aerosol heating and vaporization by pulsed light beams

1984 ◽  
Vol 23 (1) ◽  
pp. 148 ◽  
Author(s):  
Robert L. Armstrong
Keyword(s):  
Pulsed Light ◽  
Light Beams

Partial polarization of pulsed light beams

2011 ◽  
Author(s):  
Timo Voipio ◽  
Tero Setälä ◽  
Ari T. Friberg
Keyword(s):  
Pulsed Light ◽  
Light Beams ◽  
Partial Polarization

Diffraction of broadband pulsed light beams

2013 ◽  
Vol 26 (3) ◽  
pp. 178-184 ◽  
Author(s):  
V. A. Banakh ◽  
L. O. Gerasimova ◽  
I. V. Zaloznaya ◽  
O. V. Tikhomirova
Keyword(s):  
Pulsed Light ◽  
Light Beams

scholarly journals Pulsed light beams in vacuum with superluminal and negative group velocities

2003 ◽  
Vol 67 (6) ◽  
Author(s):  
Miguel A. Porras ◽  
Isabel Gonzalo ◽  
Alessia Mondello
Keyword(s):  
Negative Group ◽  
Pulsed Light ◽  
Light Beams ◽  
Group Velocities

Time-resolved spatial parametric characterization of pulsed light beams

1995 ◽  
Vol 20 (7) ◽  
pp. 660 ◽  
Author(s):  
P. M. Mejías ◽  
R. Martínez-Herrero
Keyword(s):  
Pulsed Light ◽  
Time Resolved ◽  
Light Beams

Development of Pulsed UV Light Processes for Surface Fungal Disinfection of Fresh Fruits

2006 ◽  
Vol 69 (2) ◽  
pp. 376-384 ◽  
Author(s):  
MANUEL C. LAGUNAS-SOLAR ◽  
CECILIA PIÑA ◽  
JAMES D. MacDONALD ◽  
LINDA BOLKAN
Keyword(s):  
Fungal Pathogens ◽  
Uv Light ◽  
High Peak Power ◽  
Light Sources ◽  
Pulsed Light ◽  
Surface Disinfection ◽  
Surface Irregularities ◽  
Pulsed Uv Light ◽  
Commercial Applications ◽  
Light Beams

Pulsed UV (PUV) power techniques were studied as a nonthermal, residue-free alternative to contact pesticides and to evaluate the surface disinfection of fresh fruits using this type of extremely rapid, high-peak power UV beams. Coherent 248-nm beams from excimer lasers were used to simulate a variety of pulsed light sources now commercially available. Surface disinfection on a series of fresh fruits (i.e., apples, kiwi, lemon, nectarines, oranges, peaches, pears, raspberries, and grapes), representing economically important commodities, were studied and evaluated. Plant (fungal) pathogens were rapidly (<10 s), efficiently (>5 log), and reproducibly killed on fruit surfaces. However, in naturally infected or inoculated (sprayed) fruits, a fraction of the inoculum may penetrate into the epidermis or locate in injured tissue in crevices or in surface irregularities. Under these conditions, only partial disinfection was obtained due to UV shielding (shadowing) effects, which prevent the highly directional, coherent PUV beam from reaching its target. For maximum disinfection efficiency, coherent PUV sources must be combined with dispersing reflectors, and fruits must be handled to ensure uniform exposure to multidirectional incident beams. New, existing, noncoherent, broadband, pulsed light beams (high in UV emission) from arc lamps appear to provide adequate PUV light sources capable of meeting the conditions for commercial applications in slight-modified conveyorized operations. Therefore, PUV techniques may provide effective, commercial-scale, reliable, and viable residue-free alternatives to chemical (contact) pesticides.

Sign in / Sign up

Export Citation Format

Share Document