Optical Review
Print ISSN : 1340-6000
ISSN-L : 1340-6000
Multiplication of Spectral Lines Generated by Two-Color Stimulated Raman Effect
Nobuyuki TAKEYASUCheng–Huang LINTotaro IMASAKA
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1996 Volume 3 Issue 6B Pages 549-551

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Abstract
A dye laser emitting at four different frequencies separated by 293.5 (=587/2) cm-1 is made by inserting an etalon in the resonator cavity of the laser. This laser beam is focused into molecular hydrogen (rotational Raman shift frequency, 587 cm-1) to generate a multicolor laser beam consisting of more than 10 rotational lines in the vicinity of the fundamental lines by four-wave Raman mixing. Such rotational lines also occur in the vicinity of the vibrational Raman lines. Thus more than 25 emission lines appear simultaneously. This approach is useful to multiply the line density, i.e., the emission lines within a specified wavelength region.
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© 1996 by the Optical Society of Japan
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