chanelink logo
CHANELINK
English

Researchers Obtaining Scientific Returns from Raman Spectroscopy for External Bioexploration Using Lasers

1142
2023-10-23 15:09:27
See translation

We investigated the potential of laser selection in a wide optical range from ultraviolet to visible light, and then to infrared (excitation wavelengths of 325, 532, 785, and 1064 nm), in order to combine and analyze extreme microorganisms related to Earth (such as Cryptomeria elegans, cold floating nematodes, and circular green algae), carbon water compound molecules, as well as simulated mineral mixtures (P-MRS, S-MRS, LRS, and JSC-1) of weathering layers on the Martian and lunar surfaces.

We demonstrate that the optimization of laser photon energy provides (at least one selected excitation wavelength) high-end quality Raman spectroscopy for each inspection sample. In most cases, the infrared spectral range is advanced for biological samples, while excitation within the visible and ultraviolet spectral ranges is usually advantageous, or at least sufficient to accurately identify/analyze mineral phases under luminescent laser spots on simulated planetary surfaces.

UV excitation does not always provide a significant contrast in Raman Stokes response to induced photoluminescence in the studied biomolecules. The most prominent feature in the Raman spectrum of biological samples is assigned to their specific pigments, and is also considered a biomolecular feature of extreme microorganisms. The key issue of the specific advantages and limitations of each specific excitation source means that research can obtain scientific returns from Raman spectroscopy for external biological exploration, such as the optimal trading between single or double excitation wavelengths of biological and geological spectral data.

Source: Laser Network

Related Recommendations

  • New EUV lithography technology is introduced: achieving significant cost reduction and efficiency improvement

    Recently, Professor Tsumoru Shintake from Okinawa University of Science and Technology (OIST) proposed a revolutionary extreme ultraviolet (EUV) lithography technology that not only surpasses the boundaries of existing semiconductor manufacturing, but also heralds a new chapter in the industry's future.This innovation significantly improves stability and maintainability, as its simplified design o...

    2024-08-07
    See translation

  • Omnitron Announces Partnership with Silex Microsystems to Mass Produce MEMS Scanning Mirrors for LiDAR

    According to reports, Omnitron Sensors, a pioneer in the development of MEMS sensing technology for large-scale and low-cost markets, recently announced that it will collaborate with Silex Microsystems, a subsidiary of Semielectronics, to mass produce MEMS scanning mirrors for LiDAR.Eric Aguilar, co-founder and CEO of Omnitron Sensors, said, "We have noticed a huge demand from manufacturers of adv...

    2023-09-19
    See translation

  • TAU Systems upgrades the University of Texas desktop laser to a peak power of 40 terawatts

    TAU Systems, a manufacturer of ultra fast compact laser plasma accelerators, announced today that it has successfully upgraded the existing desktop terawatt laser (UT 3) at the University of Texas to a new and improved performance that provides power for compact particle accelerators. The upgraded UT 3 driver laser can now generate ultra short pulses with a peak power of 40 terawatts.This upgrade ...

    2023-08-21
    See translation

  • Teledyne Technologies acquires a portion of its optoelectronic business

    Recently, Teledyne Technologies announced that it has reached an agreement to acquire a portion of Excelitas Technologies' aerospace and defense electronics business for $710 million in cash.This acquisition includes the optical systems business under the Qioptiq brand headquartered in North Wales, UK, as well as the Advanced Electronic Systems (AES) business headquartered in the United States.It ...

    2024-11-12
    See translation

  • Leica Measurement System Development First Person Laser Scanner

    Leica Geosystems, a subsidiary of Hexagon, has developed Leica BLK2GO PULSE, its first person laser scanner, which combines LiDAR sensor technology with the original Leica BLK2GO shape. The technology will be released in early 2024.The scanner provides users with a fast, simple, and intuitive first person scanning method that can be controlled through a smartphone and provides real-time full color...

    2023-10-19
    See translation