| 摘要 |
<p>An external-cavity tunable diode laser assembly in which a mirror is simultaneously rotated and translated so as to selectively cause the laser assembly to emit light at one of three different wavelengths. The assembly includes a diode laser (2), a diffraction grating (4), a mirror (7) and a rotatable mounting (8) for the mirror. The simultaneous rotation and translation of the mirror is accomplished by rotating the mirror about an axis of rotation formed by the line of intersection of the bisectors of the angles formed by the normals to the mirror planes at three different positions corresponding to the three different wavelengths. The normals pass through their corresponding mirror planes at the lines of intersection between the corresponding mirror plane and the mirror planes of the other two positions.</p> |
