| 摘要 |
A light source assembly ( 10 ) for a precision apparatus ( 11 ) includes a broadband light generator ( 12 ), an amplifier ( 14 ), and an optical filter ( 16 ). The light generator ( 12 ) generates a generator beam ( 22 ) that is directed at the amplifier ( 14 ). The amplifier ( 14 ) provides an amplified beam ( 24 ) by amplifying the generator beam ( 22 ). The optical filter ( 16 ) filters both the generator beam ( 22 ) and the amplified beam ( 24 ) so that an output beam ( 20 ) has a specific spectral width and a specific center wavelength, and so that the power available from the amplifier is concentrated within the desired spectrum. With this design, the light source assembly ( 10 ) can provide an output beam ( 20 ) having a spectrum determined by the filter and power which is not strongly dependent on the spectrum. For example, the output can have a specific, relatively narrow spectral width and a specific center wavelength, with sufficient power for use in precision measurement systems ( 11 ). Additionally, the output beam ( 20 ) can have sufficient spectral width to eliminate unwanted interference effects.
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