{'fraction_non_alphanumeric': 0.03333333333333333, 'fraction_numerical': 0.013725490196078431, 'mean_word_length': 5.723684210526316, '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}}
Optical virtual skin biopsy using two-color ultrafast fiber laser

We demonstrate label-free multimodal multiphoton microscopy in human skin tissue with an ultrafast Er:fiber-laserbased source that emits femtosecond pulses at 775 nm and 1250 nm. This novel two-color fiber-based source enables second-harmonic generation, third-harmonic generation, and two-photon excitation fluorescence, which serves as a potential solution to optical virtual skin biopsy with compactness, robustness, and cost-effectiveness.