{'fraction_non_alphanumeric': 0.022813688212927757, 'fraction_numerical': 0.005069708491761723, 'mean_word_length': 5.869565217391305, '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}}
Femtosecond laser direct written computer generated holograms

Recent investigations demonstrate the huge potential of Femtosecond Laser Direct Writing (FLDW) to create Computer Generated Holograms (CGHs) [1]. The main advantages compared to common lithographic methods are the single fabrication step required and the large variety of applicable materials [2]. In addition the created elements are directly embedded into the bulk, leading to a better resistance against external influences and extensive opportunities for the integration with other photonic devices [3]. Moreover the FLDW is capable of creating multiple separated structures within the same fabrication process. As demonstrated in [4] this enables multiplexing of spatial and spectral information within a single element.