{'fraction_non_alphanumeric': 0.01107011070110701, 'fraction_numerical': 0.0, 'mean_word_length': 5.464285714285714, '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 confinement via quantum well intermixing on a buried InGaAs/InGaAsP heterostructure

Selective area quantum well intermixing is used to create buried heterostructure narrow waveguides, which are shown to be effective waveguides for a narrow range of wavelengths near the lasing wavelength of the structure. Measurements on as-grown and uniformly intermixed slab waveguide are used to determine the refractive index of the two regions, and the net refractive index difference is used to predict modal behavior of the buried waveguides.