Collimating properties of an axicon for the Čerenkov-radiation-type second-harmonic light from a crystal-cored fiber.
The optical second-harmonic wave generated from a crystal-cored fiber from the Čerenkov-radiation-type phase matching can be collimated by an axicon and then can be focused by a spherical lens to a diffraction-limited spot. Tolerance of the optical system to meet the Maréchal criterion is analyzed; tolerable maximum errors in alignment and fabrication of the axicon lens are evaluated.
Chikuma
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Okamoto
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Tohma
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T
Umegaki
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