EP 1093573 A1 20010425 - DEVICE FOR DETECTING A CHEMICAL ELEMENT BY PHOTOEXCITATION
Title (en)
DEVICE FOR DETECTING A CHEMICAL ELEMENT BY PHOTOEXCITATION
Title (de)
VORRICHTUNG ZUR DETEKTION EINES CHEMISCHES ELEMENT DURCH OPTISCHER ANREGUNG
Title (fr)
DISPOSITIF DE DETECTION D'UN ELEMENT CHIMIQUE PAR PHOTOEXCITATION
Publication
Application
Priority
- CH 9900284 W 19990630
- FR 9808711 A 19980706
Abstract (en)
[origin: FR2780788A1] The invention concerns a device for detecting by photoexcitation a chemical element in a host substrate, comprising: an optical excitation source (1) emitting, in the direction of a substance sample, a light beam whereof the wavelength, located in the mid infrared, corresponds to an absorption band specific of the element; and means for detecting and measuring (11, 12, 13) the heating effects of the host substance, resulting from the interaction of the element molecules excited by said beam with said substance. The optical excitation source is a III/V semiconductor laser. It can be a quantum cascade laser, a type II quantum well laser, a type II cascade quantum laser or a multi-quantum laser using materials with low forbidden band energy.
IPC 1-7
IPC 8 full level
G01N 21/17 (2006.01)
CPC (source: EP)
G01N 21/171 (2013.01)
Citation (search report)
See references of WO 0002033A1
Designated contracting state (EPC)
CH DE GB LI
DOCDB simple family (publication)
FR 2780788 A1 20000107; FR 2780788 B1 20000922; EP 1093573 A1 20010425; WO 0002033 A1 20000113
DOCDB simple family (application)
FR 9808711 A 19980706; CH 9900284 W 19990630; EP 99959124 A 19990630