The spectroscopic characteristics and laser properties of emerald were investigated. The laser measurements showed that the emerald laser tuning range was 720-842 nm and exhibited a high gain and high efficiency in the 760-790 nm range. Under a crystal growth development program, the laser loss has been reduced from 11%/cm to 0.4%/cm. The limiting factor in the laser efficiency is the excited state absorption (ESA). The ESA was measured by two methods: A laser-pumped single-pass gain method, which is generally applicable to all tunable laser materials, and a laser-pumped laser method. A 76% laser quantum yield was obtained in high optical quality emerald. The maximum yield is estimated to be 83%, based on the ESA measurements.


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    Title :

    Spectroscopic and Laser Characterization Emerald


    Contributors:
    S. T. Lai (author) / B. H. Chai (author)

    Publication date :

    1986


    Size :

    67 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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