Princeton University

Nec Corporation

Shell Oil Compny

Lei Tao

Ting Wang

Ming-Fang Huang

Yue Tian

Howard Y Bell

Da Pan

Bernardus Maria Geertshuis

Patrick Minter Killough

M Amir Khan

Alice Margaret Sophie Elliott

Mark A Zondlo

Paul Guiguizian

Kang Sun

Mark Zondlo

Herie Javier Soto

David Miller

Josh Collins

Disclosed is a spectroscopic device, system, and method for measuring the concentration of one or more molecular species of interest in a gas, liquid or solid sample, where the device may be portable, may be commercially manufactured, and/or may be adapted to existing systems and/or integrated with new systems to provide optical gas sensing for such systems. The disclosed devices, systems, and methods can be particularly useful in monitoring the purity of, e.g., a certain gas species, including determining whether a gas mixture contains certain gas species above a set concentration limit.

Spectroscopic devices, systems, and methods for optical sensing of molecular species

Systems and methods for generating a three-dimensional gas map includes a remote vehicle including reflective material. A positioning stage including multidimensional movement to track the remote vehicle. A light head to reflect light off of the remote vehicle. A controller to analyze received light to determine gas content and generate a three-dimensional gas map.

Flexible three-dimensional long-path gas sensing by unmanned vehicles

A spectroscopic sensor and a spectroscopic method of determining a concentration of a sample are disclosed. The sensor is used in connection with a sample cell containing a sample. The sensor includes a coherent light source configured to transmit an interrogation light beam along an optical sample path directed towards the sample. The sensor also includes an in-line reference cell located in the sample path. The sensor also includes a detector having outputs responsive to absorption signals from the sample and the in-line reference cell. The sensor also includes a processor configured to isolate the reference absorption signals from the in-line reference cell and sample absorption signals from the sample cell and generate calibration information based on the reference absorption signals and determine a concentration of the sample based on the sample absorption signals.

Multi-harmonic inline reference cell for optical trace gas sensing

Growing community of inventors

Plainsboro, NJ, United States of America

Lei Tao