Multiplication of spectral lines generated by two-color stimulated raman effect |
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Authors: | Nobuyuki Takeyasu Cheng-Huang Lin Totaro Imasaka |
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Institution: | 1. Department of Chemical Science and Technology, Faculty of Engineering, Kyushu University, 812, Hakozaki, Fukuoka, Japan
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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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Keywords: | multifrequency dye laser etalon multicolor laser beam hydrogen four-wave Raman mixing |
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