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High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
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Published on: September 22, 2017

Solid-state vibrational laser-KBr:CN(-).

W Tkach, T R Gosnell, A J Sievers

    Optics Letters
    |September 2, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers achieved laser oscillation using cyanide (CN-) molecules in potassium bromide (KBr) crystals. This was enabled by optical pumping and efficient energy exchange, creating a population inversion for laser emission.

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    Phase-Dependent Control of Trap Depth and Persistent Luminescence in Strontium Aluminate Phosphors

    Published on: December 5, 2025

    Area of Science:

    • Solid-state physics
    • Molecular spectroscopy
    • Laser physics

    Background:

    • Vibrational spectroscopy of molecular ions in solid hosts is crucial for understanding energy transfer mechanisms.
    • Potassium bromide (KBr) is a well-established host crystal for doping with molecular impurities.
    • Cyanide (CN-) molecular ions exhibit distinct vibrational transitions suitable for spectroscopic studies.

    Purpose of the Study:

    • To investigate laser oscillation from vibrational transitions of cyanide (CN-) molecules doped into potassium bromide (KBr) host crystals.
    • To explore the conditions necessary for achieving population inversion in the CN- vibrational system.
    • To understand the role of optical pumping and energy exchange in facilitating laser emission.

    Main Methods:

    • Doping of KBr host crystals with CN- molecules.
    • Optical pumping of the 0 → 1 vibrational transition of CN-.
    • Spectroscopic analysis to observe laser oscillation at 2054 cm(-1).
    • Investigation of vibrational-energy exchange processes at varying CN- concentrations.

    Main Results:

    • Laser oscillation was successfully observed at a frequency of 2054 cm(-1).
    • Population inversion between the nu = 2 and nu = 1 vibrational levels of CN- was achieved.
    • Efficient vibrational-energy exchange was identified as a key process.

    Conclusions:

    • Vibrational transitions of CN- in KBr crystals can support laser oscillation.
    • Optical pumping combined with efficient energy exchange is a viable method for creating population inversion.
    • This study demonstrates the potential of doped molecular crystals for developing new laser sources.