ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Second harmonic generation (SHG) in single crystals of 9,10-dihydroanthracene (DHA) is reported. If the axes of the optical indicatrix are labeled X, Y, and Z (with X the fast ray) then Y-polarized SHG is observed at room temperature using Z-polarized laser excitation at 687.9 nm; in this YZ section both the incoming and outgoing rays behave ordinarily (no walk-off problem). There was some anthracene impurity present in all samples, and since anthracene absorbs near 340 nm, SH production could be followed by observing the resulting anthracene fluorescence; anthracene bands were observed as peaks or dips in the fluorescence response curve. These observations can be accounted for using a simple model in which SHG is purely a property of DHA, the presence of anthracene acting only to attenuate the conversion efficiency, which was always held 〈1% to avoid crystal damage.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.339015
