{'fraction_non_alphanumeric': 0.01948051948051948, 'fraction_numerical': 0.0, 'mean_word_length': 5.070866141732283, '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}}
Hardening of polymer optical materials with laser cycling and gamma-rays

When certain molecules are doped into polymers, they are photo-chemically more stable to photodegradation than the same molecule in liquid solution or crystalline form. Furthermore, such composite materials are also found to self heal after photo-damage when they are stored in the dark. Repeated laser cycling of these dye-doped polymers make them more immune to future photodegradation. In parallel, it has been observed that electrooptic devices made with poled dye-doped polymers become more robust upon irradiation by gamma-rays. In the present work, we combine both gamma radiation and laser cycling and find that the synergism between the two processes may result in more robust materials.