chanelink logo
CHANELINK
Français

Pressure sensing using dual color laser absorption spectroscopy

378
2024-03-09 13:58:51
Voir la traduction

The research team led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences recently designed a concentration independent pressure sensing technology for high-temperature combustion diagnosis. This method is based on dual color laser absorption spectroscopy.

The results of this study have been published in Optics Letters.
Aircraft engines are transitioning towards high-temperature and high-pressure combustion to improve thermodynamic efficiency. Pressure is a key parameter for monitoring engine performance and diagnosing engine faults. However, traditional contact pressure sensors can disrupt combustion flow and are limited by the temperature tolerance of the sensor material.

The researchers of this study designed a non-contact pressure sensing technology for high-temperature environments and tested it at temperatures up to 1300 K. This study mainly addresses the challenge of considering the influence of molecular concentration on gas pressure measurement in such an environment.

Researchers have found that by connecting double absorption lines to widen the collision line width, concentration variables can be alleviated. This breakthrough enables researchers to achieve concentration independent pressure measurements.

To verify this discovery, considering that the main product of hydrocarbon fuel combustion systems is H2O, the team used double absorption lines of H2O near 1343 nm and 1392 nm in a precisely designed heating absorption cell. They each achieved 50 μ S and 3% time resolution and pressure measurement uncertainty.

Source: Laser Net

Recommandations associées

  • Iron Triangle releases fiber Bragg gratings and arrays based on multi-core fibers

    T35 multi-core fiber grating and T103 multi-core fiber grating arrays can be engraved into all fiber cores in physical locations, or only onto certain fiber cores.They can also have the same wavelength, or they can have all different wavelengths at the same physical location along the fiber or at different physical locations along the fiber.T35 and T103 are very suitable for projects that require...

    2023-10-28
    Voir la traduction

  • Laser Photonics cleaning technology simplifies the removal of biofilms in industrial environments

    Laser Photonics Corporation is a leading global industrial developer of CleanTech laser systems for laser cleaning and other material applications, highlighting a key application of its CleanTech laser system.Wayne Tupuola, CEO of Laser Photonics, commented, "Our CleanTech laser cleaning system provides an efficient and cost-effective method for removing biofilms from various materials and surface...

    2023-09-20
    Voir la traduction

  • Veeco Instruments wins IBM big order

    On August 14th local time, Veeco Instruments, a well-known American laser annealing manufacturer, announced an important cooperation with technology giant IBM. It is reported that IBM has selected Veeco Instruments' WaferStorm wet processing system as support for its advanced packaging applications, and the two parties have signed a joint development agreement to explore the potential of utilizi...

    2024-08-23
    Voir la traduction

  • Xi'an Institute of Optics and Fine Mechanics has made significant progress in the field of metasurface nonlinear photonics

    Recently, the Research Group of Nonlinear Photonics Technology and Application in the Transient Optics Research Room of Xi'an Institute of Optics and Mechanics, Chinese Academy of Sciences has made important progress in the field of super surface nonlinear photonics. Relevant research results were published in Laser&Photonics Reviews (IF=9.8), the top journal of the first district of the Chine...

    04-30
    Voir la traduction

  • Luxiner launches LXR platform to set new standards for industrial laser microfabrication

    Luxiner, a globally renowned laser technology leader, proudly launches its latest innovative product, the groundbreaking LXR ultra short pulse laser platform. This cutting-edge technology represents a significant leap in industrial laser processing, providing unparalleled performance, versatility, and reliability.In today's rapidly changing industrial environment, laser technology plays a crucial ...

    2024-03-25
    Voir la traduction