出典:Wikipedia
出典:『Wikipedia』 (2011/04/25 06:14 UTC 版)
A tunable laser is a laser whose wavelength of operation can be altered in a controlled manner. While all laser gain media allow small shifts in output wavelength, only a few types of lasers allow continuous tuning over a significant wavelength range.
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a device that emits a laser beam
偏光.
laser light diffracts electrons
a holophote