Fiber optic laser device and light emitter utilizing the device
First Claim
1. A solid state laser capable of producing a controlled narrow wavelength of emission and including a radiation generating medium within a first optical cavity, a passive waveguide medium forming a second optical cavity, said cavities being optically coupled together, reflector means at the extremities of said caviies and at the point of their coupling, at least one of said reflector means being a narrow band reflector having a peak reflectivity within the gain spectra of radiation emission from said medium whereby a dual cavity is established selective of a narrow band of operating wavelengths.
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Abstract
A fiber optic device basically comprising an optical fiber/interference filter combination finds useful application in optical communication systems for wavelength selection or bandwidth selection from a multiwavelength light source or emitter. If the emitter is a semiconductor laser, the device may be also employed to provide single longitudinal mode control at the selected wavelength or bandpass.
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Citations
10 Claims
- 1. A solid state laser capable of producing a controlled narrow wavelength of emission and including a radiation generating medium within a first optical cavity, a passive waveguide medium forming a second optical cavity, said cavities being optically coupled together, reflector means at the extremities of said caviies and at the point of their coupling, at least one of said reflector means being a narrow band reflector having a peak reflectivity within the gain spectra of radiation emission from said medium whereby a dual cavity is established selective of a narrow band of operating wavelengths.
Specification