chanelink logo
CHANELINK
简体中文

Pressure sensing using dual color laser absorption spectroscopy

149
2024-03-09 13:58:51
查看翻译

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

相关推荐

  • IPG introduces a new dual-beam laser with the highest single-mode core power

    From September 12 to 14, 2023, IPG Photonics, a well-known fiber laser technology leader in the United States, will showcase its latest innovative laser solutions at the Battery Show in Michigan, USA. IPG will also showcase industry-leading fiber laser sources and automated laser systems for electric vehicle battery welding applications.New laser technology pushes the limits of battery welding spe...

    2023-09-14
    查看翻译

  • 20W High Power Fiber Optic Frequency Comb with 10 to 19 Power Outside Ring Frequency Stability

    High power optical frequency combs play a crucial role in nonlinear precision spectroscopy, extreme ultraviolet optical frequency comb generation, nuclear atomic clock research, and other fields. Fiber optic femtosecond lasers are the preferred solution for achieving high power optical frequency combs due to their simple structure, stable performance, and easy amplification. However, due to the un...

    2023-10-20
    查看翻译

  • Bodor Laser has been approved by Shandong Engineering Research Center

    Recently, the Development and Reform Commission of Shandong Province announced the list of Shandong Engineering Research Centers for 2024. bodor Laser has been recognized as the "Advanced Laser High end Intelligent Manufacturing and Application Shandong Engineering Research Center" and is the only enterprise in the laser intelligent manufacturing industry to be listed.As an important component of ...

    2024-07-17
    查看翻译

  • HP100A-50KW-GD laser power detector for measuring extremely high power laser beams

    The HP100A-50KW-GD laser power detector is mainly designed for manufacturers of high-power lasers and laser systems, factories that use high-power lasers to cut thick metal parts, and military applications.The HP100A-50KW-GD adopts a gold reflector cone and a reduced back reflection geometry, which can capture 97% of incident light and process up to 50 kW of continuous laser power. The back reflec...

    2024-01-16
    查看翻译

  • Application and Effect of Laser Cleaning

    Mold cleaning: Mold plays a very important role in industrial production. Currently, there are over a thousand mold related enterprises in China, driving the related output value to nearly 10 billion yuan. Among them, mold cleaning is an essential step in mold production. Laser can achieve contactless cleaning of molds, which is very safe for the surface of the mold, ensuring its accuracy, and can...

    2023-10-14
    查看翻译