chanelink logo
CHANELINK
日本語

Pressure sensing using dual color laser absorption spectroscopy

370
2024-03-09 13:58:51
翻訳を見る

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

関連のおすすめ

  • Aerotech announces new control features for laser scanning heads

    Aerotech has upgraded the performance of AGV laser scanning heads through powerful controller functions to enhance scanner control (ESC). The new ESC function of the Automation 1-GL4 2-axis laser scanning head driver is a completely passive control loop enhancement function that ensures higher accuracy in the most dynamic motion.With the increasing demand for higher output laser technology in vari...

    2024-06-04
    翻訳を見る

  • The Future of Data Center Communication: Quantum Dot Semiconductor Comb Laser

    In the constantly evolving field of technology and data communication, researchers have made significant breakthroughs: developing a continuous wave O-band quantum dot semiconductor comb laser for wavelength division multiplexing optical interconnection. With its impressive performance characteristics, this development is expected to completely change the way we manage and transmit data, especiall...

    2024-02-21
    翻訳を見る

  • Breakthrough development of terahertz quantum cascade lasers

    With the development of groundbreaking components for terahertz quantum cascade lasers, a huge leap has been made in the field of laser technology. A group of researchers have successfully designed a broadband single-chip external coupler with the potential to redefine the functionality of terahertz QCL.The new external coupler is fundamentally based on planar bimetallic waveguides. Its design is ...

    2024-01-04
    翻訳を見る

  • New super-resolution microscopy imaging technology: rapid imaging of neurons

    The research group led by Wang Kai from the Center for Excellence in Brain Science and Intelligent Technology of the Chinese Academy of Sciences has published a research paper titled "Super solution imaging of fast morphological dynamics of neurons in eating animals" online in Nature Methods. The team has developed a new type of super-resolution microscopy imaging technology, which solves the two ...

    2024-12-04
    翻訳を見る

  • Vector Photonics accelerates the commercialization of PCSEL laser technology

    Recently, Vector Photonics, a well-known surface coupled laser technology supplier in the UK, announced that the company has received £ 3 million in financing (including £ 1.667 million in equity investment and £ 1.27 million in additional research funding, equivalent to approximately RMB 27.63 million) to help commercialize its surface coupled laser technology.(Image source: Vector Photonics)Vect...

    2024-07-04
    翻訳を見る