chanelink logo
CHANELINK
Nederlands

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

151
2023-10-23 15:09:27
Bekijk vertaling

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

Gerelateerde aanbevelingen

  • Mycronic receives first order after upgrading solid-state lasers

    Recently, Mycronic AB received its first order from SK Electronics in Japan to upgrade the installed display mask writer from a gas laser to a solid-state laser. The upgrade is scheduled to be delivered within the next two years.Image source: MycronicIt is reported that Mycronic's "Pattern Generators" department provides mask writers for display manufacturing and semiconductor production. So far, ...

    2023-10-16
    Bekijk vertaling

  • 43 seconds! Completion of laser welding of a new energy vehicle body

    March 8, in the three sessions of the 14th National People's Congress, the second “representative channel” focused on interviews, the National People's Congress, the party secretary of HGTECH Science and Technology, Chairman of the Board of Directors Ma Xinqiang, said in response to a reporter's question, in order to crack the “strangle  “technical problems, HGTECH over the years in the field of h...

    03-11
    Bekijk vertaling

  • Scientists uncover the HPC potential of advances in communications and global laser light sources

    Thanks to the advent of high performance computing (HPC) for global laser light sources, the optical communications world is on the verge of major change. This revolutionary technology will redefine the way we transmit and receive data, bringing unprecedented speed and efficiency.Optical communication, which uses light to transmit information, has been a cornerstone of our digital world for deca...

    2023-08-04
    Bekijk vertaling

  • Precision laser manufacturer Preco appoints Jacob Brunsberg as CEO

    Recently, Preco, a leading enterprise in precision laser material processing and laser equipment manufacturing solutions, officially announced a major personnel appointment: Jacob Brunsberg, an outstanding senior manufacturing and technology management expert, has been appointed as its CEO. Mr. Brunsberg is a renowned senior manager in the field of advanced manufacturing and technology, with man...

    2024-09-23
    Bekijk vertaling

  • Scientists build high-power cladding-pumped Raman fiber laser in 1.2 μm band

    Laser sources operating in the 1.2 μm band have some unique applications in photodynamic therapy, biomedical diagnostics, and oxygen sensing. In addition, they can be used as pump sources for mid-infrared optical parameter generation and visible light generation through frequency doubling.Laser generation in the 1.2 μm band has been achieved by different solid-state lasers, including semicon...

    2024-01-31
    Bekijk vertaling