Femtosecond laser written depressed cladding waveguides in sapphire guide 728 nm light in single mode with 1.9(3) dB/cm propagation loss; curved guides show sharp loss increase below 15 mm radius.
Femtosecond laser inscription of depressed cladding single- mode mid-infrared waveguides in sapphire
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Femtosecond laser written waveguides in sapphire for visible light delivery
Femtosecond laser written depressed cladding waveguides in sapphire guide 728 nm light in single mode with 1.9(3) dB/cm propagation loss; curved guides show sharp loss increase below 15 mm radius.