{'fraction_non_alphanumeric': 0.024074074074074074, 'fraction_numerical': 0.02962962962962963, 'mean_word_length': 5.290697674418604, '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}}
The effects on femtosecond light pulses advancing through a lens

In the present paper, the results of theoretical investigations of a lens' dispersion characteristics and the field intensity of propagated through a lens spatial‐limited femtosecond pulses with a duration of several optical periods are presented. The dependences of group delay and group velocity dispersion that are introduced by the lens versus spatial coordinates and frequencies are obtained. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 31: 302–305, 2001.