1. Stable wavelength-swept light source designed for industrial applications using KTN beam-scanning technology

    Stable wavelength-swept light source designed for industrial applications using KTN beam-scanning technology

    Using light-beam scanning technology based on a potassium tantalate niobate (KTa 1-x Nb x O 3 , KTN) single crystal, we constructed a wavelength-swept light source for industrial applications. The KTN crystal is placed in an external cavity as an electro-optic deflector for wavelength scanning without any mechanical operation. Cavity arrangement and mechanism elements are specially designed for long-term stability and environmental robustness. In addition, we updated the handling of the KTN crystal. We used a pair of thermistors for accurate temperature monitoring, and weakly irradiated the crystal with a 405-nm light during operation to achieve drift suppression. We selected a ...

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