Lasers and Optical Spectroscopy in Questioned Document Examination

    Volume 31, Issue 3 (July 1986)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Published Online: 1 July 1986

    Page Count: 15


    Menzel, ER
    Associate professor, Physics Department, and director, Center for Forensic Studies, Texas Tech University, Lubbock, TX

    Wilde, JP
    Research assistants and research associate, respectively, Center for Forensic Studies, Texas Tech University, Lubbock, TX

    Everse, KE
    Research assistants and research associate, respectively, Center for Forensic Studies, Texas Tech University, Lubbock, TX

    Sinor, TW
    Research assistants and research associate, respectively, Center for Forensic Studies, Texas Tech University, Lubbock, TX

    (Received 17 October 1985; accepted 19 November 1985)

    Abstract

    The use of in situ laser-luminescence and excitation spectroscopy for examination of questioned documents is investigated. It is found that such spectroscopy can at times discriminate between similar inks when conventional methods are unsuccessful. A particularly effective procedure for room temperature luminescence enhancement is presented and compared with luminescence at cryogenic temperatures.


    Paper ID: JFS11093J

    DOI: 10.1520/JFS11093J

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    Author
    Title Lasers and Optical Spectroscopy in Questioned Document Examination
    Symposium , 0000-00-00
    Committee E30