Coherent light source and optical device using the same
A coherent light source and main light source technology, applied in optics, nonlinear optics, color TV components, etc., can solve problems such as the difficulty of direct oscillation of blue light, and achieve high efficiency and high output effects
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no. 1 example
[0086] Fig. 1 is a configuration diagram of a coherent light source according to a first embodiment of the present invention. Referring to FIG. 1 , the configuration and operation of a coherent light source according to the present embodiment are briefly explained. The doped fiber 105 constituting the fiber amplifier emits light with a wavelength of lambda_1, and the light with a wavelength of lambda_1 is emitted from the main light source 101 and amplified by the pump light source 102 and the doped fiber 105 . The doped fiber 106 constituting another fiber amplifier emits light with a wavelength of lambda_2 . The light with a wavelength of lambda_2 is emitted from the main light source 103 and amplified by the pump light source 104 and the doped fiber 106 . According to the first embodiment, main light sources 101 and 103, pump light sources 102 and 104, and doped optical fibers 105 and 106 constitute a light source unit. In addition, in other embodiments, the light source u...
no. 2 example
[0104] The coherent light source according to the present embodiment has a configuration capable of simultaneously generating coherent light having peaks in a plurality of wavelength regions (for example, two wavelength regions of blue and green). FIG. 6 is a configuration diagram of a coherent light source according to the present embodiment. The SHG element 107 converts light having a wavelength of 1540 nm emitted from the doped fiber 302 constituting the erbium / ytterbium-doped fiber into light having a wavelength of 770 nm. The SFG element 108 converts light with a wavelength of 1080 nm and SHG light with a wavelength of 770 nm emitted from the doped fiber 301 constituting the Yb-doped fiber into SFG light 110 constituting blue light with a wavelength of 450 nm. In addition, the second SHG element 303 separates the emitted light with a wavelength of 1080 nm that has not been converted by the SFG element 108 , and converts it into SHG light 304 constituting green light with ...
no. 3 example
[0123]Now, a light source having a configuration of a fiber amplifier (pump light source and doped fiber) for a monolithic structure is explained. According to this embodiment, the doped fiber 204 doped with both erbium and ytterbium is used as a fiber amplifier. By pumping the doped fiber 204 with the pump light source 102 having a wavelength of 975 nm or 915 nm, the doped fiber 204 can be used as a fiber amplifier. This fiber amplifier performs amplification operations in wavelength regions around 1540 nm and around 1080 nm. When the light from the main light sources 101 and 103 is input to the fiber amplifier, the doped fiber 204 amplifies the wavelength of the main light sources. For example, assuming that main light source 101 has a wavelength around 1080 nm and main light source 103 has a wavelength around 1540 nm, a single doped optical fiber 204 can oscillate light of different wavelengths. In the configuration of FIG. 11 , by simultaneously emitting lights of 1540 n...
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