| 摘要 |
PURPOSE:To obtain laser output with low input by coating windows provided at both longitudinal ends of a laser body, or a reflecting mirror and an output mirror, with a film having predetermined reflecting characteristic. CONSTITUTION:Windows 6, 7 coated on the surfaces with a deposited film having reflecting characteristic shown in the drawing are used. The deposited film does not reflect at the wavelength of the laser oscillation light, and reflects at the infrared wavelength above near infrared band. Thus, the radiated light (heat beam) above the near infrared band is reflected at the windows 6, 7, and returned into a discharge tube 2. Thus, the temperature in the tube can be raised higher. A total-reflecting mirror 8 and an output mirror 9 are coated on the surfaces with deposited film having specific reflecting characteristic. Thus, the radiated light (heat beam) of the infrared band above the near infrared band is reflected, and returned into the tube 2, thereby raising higher the temperature in the tube. Thus, similar laser output to the conventional one can be obtained with a lower input. |
