Nidex Co., Ltd.

Lalit B Sharma

Kenichi Hayashi

A medical laser apparatus comprises: a solid laser oscillating source which emits a beam of a wavelength &#x3bb;in an infrared region of approx. 1040 nm to approx. 1080 nm; a first fiber-based Raman shifter including a first Raman fiber which generates, when receives the &#x3bb;-beam from the laser oscillating source, a first-order Stokes beam of a wavelength &#x3bb;different from the wavelength &#x3bb;by stimulated Raman scattering, the first Raman fiber being formed with a pair of fiber Bragg gratings which forms a resonator for the &#x3bb;-beam; a first nonlinear crystal which wavelength-converts the &#x3bb;-beam outputted from the first Raman wavelength shifter to a second harmonic beam of a wavelength &#x3bb;' in an orange region of approx. 580 nm to approx. 600 nm; and a light guiding optical system which guides the &#x3bb;&#x2032;-beam to a treatment part.

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Gamagori, Japan

Lalit B Sharma