Patent ID: 9360298
Filing Date: 2016-06-07
CPC Classification: G01B,H01S

Claim Text:
1. A surface emitting laser operable to change a wavelength of emitted light, the surface emitting laser comprising: a first reflecting mirror; a second reflecting mirror, wherein a cavity is formed between the first reflecting mirror and the second mirror along the optical axis of the surface emitting laser; an active layer formed within the cavity; a region formed within the cavity; and a movable part situated within the region, the movable part having a refractive index different from a refractive index of the region; wherein the wavelength of emitted light is changeable by changing the position of the movable part along the direction of the optical axis in the region; and wherein a cavity length formed between the first reflecting mirror and second reflecting mirror is ten wavelengths or less, one wavelength being a center wavelength of a wavelength range of light which the surface emitting laser can emit.