chanelink logo
CHANELINK
English

Pressure sensing using dual color laser absorption spectroscopy

1171
2024-03-09 13:58:51
See translation

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

Related Recommendations

  • Old brand laser manufacturers win major orders in the nuclear industry

    Recently, Laser Photonics Corporation (LPC) claims to have successfully secured an order from ES Fox Limited to provide them with the CleanTech 500-CTHD laser cleaning system.ES Fox Limited, founded in 1934, is recognized as a leader in the industrial manufacturing and construction industry in Canada. Its nuclear service department has invested millions of hours to support the nuclear power indust...

    2024-05-28
    See translation

  • Received NASA contract! Breakthrough blue light laser technology leads the space power revolution

    On May 6th, NUBURU, a leading enterprise in high-power and high brightness industrial blue laser technology, announced that the company has been awarded a second phase contract worth $850000 by the National Aeronautics and Space Administration (NASA) to promote blue laser power transmission technology as a unique solution that significantly reduces the size and weight of equipment required for lun...

    2024-05-08
    See translation

  • Shanghai Optical Machinery Institute has made progress in high-efficiency optical parametric amplification technology

    Recently, a joint research team composed of Sun Meizhi, associate researcher of the High Power Laser Physics Joint Laboratory of the Chinese Academy of Sciences Shanghai Institute of Optics and Precision Mechanics, and Tu Xiaoniu, associate researcher of the Chinese Academy of Sciences Shanghai Institute of Silicate, proposed a new configuration of cross Fabry Perot intracavity optical parametric ...

    2024-07-11
    See translation

  • Quantum droplets reveal a new field of macroscopic complexity

    Scientists have advanced this field by stabilizing exciton polaritons in semiconductor photonic gratings, achieving long-lived and optically configurable quantum fluids suitable for complex system simulations.Researchers from Leicester CNR Nanotec and the School of Physics at the University of Warsaw used a new generation of semiconductor photonic gratings to optically customize the composite of q...

    2024-03-28
    See translation

  • Laser communication is expected to completely change optical links

    Laser technology is becoming a game changer in the field of satellite communication (SATCOM), capable of creating ultra secure networks that can transmit large amounts of data at unprecedented speeds through satellite networks and constellations.With continuous progress, the industry is ready for growth and collaboration, seizing the untapped potential of disconnected populations. The ability to h...

    2023-09-20
    See translation