Abstract
The gain in an XeF-pumped H2 Raman amplifier has been measured as a function of the variable delay between the incident pump and Stokes beams. The experiments were performed with spatially filtered, near-Gaussian pump and Stokes beams (see Fig. 1), Our measurements of the absolute peak gain as a function of the relative path lengths are shown in Fig. 2. We observe twenty-two maxima in the gain over the 40-mm distance with a peak gain enhancement of ~150. This is in marked contrast to the single peak of enhancement about equal to 15 for 2X YAG- pumped H2 (Ref. 1) and XeCI-pumped H2.2 The peaks are separated by ~1.8 mm. This separation appears to correspond generally to the inverse of the separation in cm-1 of the two strong spectral features of the 351-nm line (~5.7 cm-1). We believe that the structure observed in Fig. 2 is caused by this line, which contains 60% of the laser energy and has a peak spectral intensity 2.3 times that of the 353-nm line and 110 times that of the 349-nm line.
© 1987 Optical Society of America
PDF ArticleMore Like This
J. RIFKIN, M. L. BERNT, D. C. MACPHERSON, and J. L. CARLSTEN
THGG48 International Quantum Electronics Conference (IQEC) 1987
Jagdish Rai and J. R. Izatt
MD7 OSA Annual Meeting (FIO) 1987
TORU MIZUNAMI and KEIJI TAKAGI
WI6 Optical Fiber Communication Conference (OFC) 1987