chanelink logo
CHANELINK
English

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

1121
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

  • Chinese researchers enhance perovskite lasers by suppressing energy loss

    Limiting Auger recombination enables “record” quasi-continuous wave laser output.For years, engineers have sought better ways to build tiny, efficient lasers that can be integrated directly onto silicon chips, a key step toward faster, more capable optical communications and computing.Today’s commercial lasers are mostly made from III-V semiconductors grown on specialized substrates—a process that...

    08-25
    See translation

  • BluGlass successfully raised $5.87 million to accelerate GaN laser production and delivery

    Recently, BluGlass, a leading global semiconductor development company, successfully completed its stock purchase plan (SPP) and raised $5.87 million in funds (excluding costs). This SPP provides eligible shareholders with the opportunity to subscribe to up to $100000 in new shares of BluGlass at a discounted price of $0.037 per share, along with free additional options. This initiative has gained...

    2024-04-12
    See translation

  • Coherent Axon laser won the 2023 Business Innovation Award from the British Physical Society

    One of the laser leaders in the field of life sciences, Coherent Gao Yi (New York Stock Exchange: COHR), recently announced that its Axon laser won the 2023 Business Innovation Award at the awards ceremony held by the British Physical Society on October 30th.Dr. Vincent D. Mattera, Jr., Chairman and CEO of Coherent, stated that, Coherent, especially our team at the Center for Excellence in Ultrafa...

    2023-11-03
    See translation

  • Laser induced 2D material modification: from atomic scale to electronic scale

    Background IntroductionTwo dimensional materials have attracted widespread attention due to their atomic level thickness and unique properties, such as high binding energy, tunable bandgap, and new electronic degrees of freedom (valley electronics). They have many application prospects in fields such as microelectronics, nanophotonics, and nanoenergy. Various two-dimensional materials have their o...

    2024-02-23
    See translation

  • Lumentum acquires Hong Kong optical module manufacturer Cloud Light to expand its influence in cloud data centers and network infrastructure

    On October 30th, Lumentum announced the acquisition of Hong Kong optical module manufacturer Cloud Light for $750 million (approximately RMB 5.48 billion), with the aim of expanding its influence in cloud data centers and network infrastructure.It is understood that Cloud Light is a Hong Kong company that provides various optical product solutions, mainly focusing on designing and manufacturing ad...

    2023-11-01
    See translation