MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202617079121 A) filed by Emerson Process Management Limited on June 26, 2026, for Pulse Laser Spectrometer.
Inventors include Logie, David; and Smirne, Giuseppe.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: A method for sensing gases using a semiconductor diode laser is disclosed. The method comprises: applying an electrical current pulse to a semiconductor diode laser thereby to cause the laser to produce a laser output pulse, wherein the application of the electrical pulse to the semiconductor diode laser causes an increase in temperature such that the produced laser output pulse comprises a continuous wavelength chirp over a wavelength range; providing the produced laser output pulse to the gas sample region, wherein at least part of the wavelength range of the wavelength chirp is used as a wavelength scan; and detecting optical output from the gas sample region, wherein the wavelength chirp is caused, at least in part, by the increase in temperature of the laser induced by the applied electrical pulse, and wherein the electrical current pulse comprises an electrical pulse length, or duration, of at least 5 microseconds and/or wherein the length of the electrical current pulse causes the increase in temperature to slow over the length of the current pulse thereby causing the rate of change of the continuous wavelength chirp to continuously slow over the length of the pulse from a first initial rate to a second, slower rate, and wherein the detection and/or further sampling of the optical output is performed at the second, slower rate.
Disclaimer: Curated by HT Syndication.
