US 12,320,702 B2
Pathogen detection and neutralization using deep UV-C generation via seeded Raman amplification and second harmonic generation
Stephen William McCahon, Tucson, AZ (US); and Alan Kost, Tucson, AZ (US)
Assigned to Applied Energetics, Inc., Tucson, AZ (US)
Filed by Applied Energetics, Inc., Tucson, AZ (US)
Filed on Dec. 9, 2022, as Appl. No. 18/064,116.
Claims priority of provisional application 63/265,250, filed on Dec. 10, 2021.
Prior Publication US 2023/0184590 A1, Jun. 15, 2023
Int. Cl. G01J 3/44 (2006.01); G01N 21/64 (2006.01); G01N 21/65 (2006.01)
CPC G01J 3/44 (2013.01) [G01N 21/64 (2013.01); G01N 21/65 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A laser pathogen detection and neutralization system; comprising:
a pulsed light source producing a first pulsed light having an optical spectrum at a first source wavelength;
a Raman amplification stage coupled to the pulse light source and one or more selectable Raman amplification mediums, the Raman amplification stage producing a first amplified pulsed light;
a wavelength converter coupled to the tunable Raman amplification stage wherein the wavelength converter accepts the first amplified pulsed light thereby producing a first light output pulse with a first output wavelength suitable to generate a wavelength distribution of emission spectrum from excitation by fluorescence of a select class of pathogens and wherein the wavelength converter further accepts the first amplified pulsed light and passes a wavelength unchanged portion of the first amplified pulsed light as a second light output pulse for Raman spectroscopic characterization of a select pathogen;
a shutter mechanism configured to select either the first light output pulse or the second light output pulse from the wavelength converter to be directed towards a target area; and
a detector, operatively coupled to the pulsed light source and the Raman amplification stage, operable to detect the wavelength distribution of emission spectrum from excitation by fluorescence of the select class of pathogens in the target area.