| 摘要 |
A laser with variable wavelength contains, as laser-active material in the laser resonator, a mixture consisting of a first substance present as granulate and of a fluid (liquid or gaseous) second substance. One of these substances is laser-active. The course of the dispersion curves (11-12, and 13-14, respectively) of the indices of refraction of the two substances is dependent on temperature and/or pressure or density, and the curves have at least one point of intersection. When the laser is excited, it emits at a wavelength ( lambda 1, lambda 2) which corresponds to the point of intersection of the dispersion curves. The temperature and/or pressure or density of the mixture of substances within the laser resonator is varied for controlled selection of the emission wavelength ( lambda 1, lambda 2). |
