chanelink logo
CHANELINK
Italiano

Pressure sensing using dual color laser absorption spectroscopy

140
2024-03-09 13:58:51
Vedi traduzione

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

Raccomandazioni correlate

  • Coherent Unifies Ultrafast Laser Business at the Glasgow Center of Excellence

    Recently, Coherent, an American laser system solution provider, announced that all of the company's ultra fast laser business, including the manufacturing of all picosecond and femtosecond lasers, will be unified in one place: the Ultra Fast Center of Excellence in Glasgow, Scotland.Previously, Coherent's Ultra Fast Center of Excellence located in Glasgow was already a state-of-the-art mass produc...

    2023-09-22
    Vedi traduzione

  • The Danish authorities have approved the sale of this laser manufacturer to Hamamatsu, Japan

    On May 6, 2024 local time, the Danish Business Administration (DBA) approved the sale of NKT Photonics to Photonics Management Europe S.R.L, a wholly-owned subsidiary of Hamamatsu Photonics K.K.On that day, Hamamatsu Photonics received a notice from the Danish Business Administration stating that the acquisition had been approved:(Source: The Danish Business Authority)NKT Photonics stated that the...

    2024-05-09
    Vedi traduzione

  • Zeiss, a century old optical giant, has established the Optoelectronic Optics Division

    Recently, Carl Zeiss announced on its official website that it plans to launch a new strategic business unit, ZEISS Photonics&Optics, on October 1, 2024, with the aim of providing excellent optoelectronic and optical products and solutions to global customers. It is reported that starting from the 2024/25 fiscal year, Zeiss Group will establish a new business unit focused on optoelectronics...

    2024-05-28
    Vedi traduzione

  • Is CTC technology in the booming new energy industry likely to disrupt the fiber laser industry?

    Recently, the term CTC technology has become a hot topic in the new energy vehicle industry. During the relatively slow period of electrochemical innovation, this structural innovation effectively helped the new energy industry reduce costs and increase efficiency, while also increasing the range of new energy vehicles to a certain extent. However, recently the author learned that the concept of C...

    2023-09-18
    Vedi traduzione

  • Sunny Optical's "Optical Imaging Lens" Announced

    Recently, according to the information of the China National Intellectual Property Administration, Zhejiang Sunny Optics Co., Ltd. has obtained a patent named "Optical Imaging Lens", with authorization announcement No. CN221899396U and application date of 2024-01-31.The patent abstract shows that the present application discloses an optical imaging lens, comprising a barrel and first to eighth len...

    2024-10-31
    Vedi traduzione