| US 7,489,715 B2 | ||
| Optimization of mode selection in a laser resonator | ||
| Sven Hädrich, Düsseldorf (Germany) | ||
| Assigned to Sirah Laser-und Plasmatechnick GmbH, (Germany) | ||
| Filed on Jun. 13, 2006, as Appl. No. 11/453,197. | ||
| Claims priority of application No. 10 2005 027 315 (DE), filed on Jun. 13, 2005. | ||
| Prior Publication US 2006/0280508 A1, Dec. 14, 2006 | ||
| Int. Cl. H01S 3/10 (2006.01) | ||
| U.S. Cl. 372—26 [372/29.016; 372/29.023] | 19 Claims |
| 1. A control system for the optimization of mode selection in a laser resonator, comprising at least one optical band-pass
filter, at least one program-controlled DSP processor which performs functions comprising:
modulating at least one of the optical band-pass filters in relation to its spectral transmission maximum about a mid-setting
and recording the intensity fluctuations of the laser radiation resulting therefrom,
calculating a phase shift between the intensity fluctuations and the modulation of at least one optical band-pass filter,
and
regulating the mid-setting of at least one optical band-pass filter based on the detected phase shift.
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