{'fraction_non_alphanumeric': 0.03514376996805112, 'fraction_numerical': 0.011182108626198083, 'mean_word_length': 4.915094339622642, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A compact passively Q-switched SrWO4 Raman laser with mode-locked modulation

A compact all-solid-state diode-pumped passively Q-switched intracavity SrWO4 Raman laser was constructed with a simple linear cavity and a Cr:YAG crystal as the saturable absorber. A diode-to-Stokes conversion efficiency of 12.7% was obtained at a pump power of 6.3 W, which was much higher than those of previously reported diode-pumped passively Q-switched intracavity Raman lasers. In the stimulated Raman scattering operation, mode-locked modulation was observed in the Q-switched envelope; the mechanism of the mode locking is also discussed.