Abstract
The problem of line-hopping in a short cavity, slab waveguide CO 2 laser is studied by modelling of the laser signature and the experimental determination of laser spectra. It is shown that small increments of resonator length, less than 100 µm, significantly change the number of lines in the spectra and at a specific resonator length near 408.7 mm there is the possibility of single line operation. To reduce line-hopping and lock the laser to the 10P20 line, a 10th order, 2 dimensional grating has been laser engraved on one surface of the planar waveguide.
Original language | English |
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Pages (from-to) | 55-59 |
Number of pages | 5 |
Journal | Proceedings of SPIE - the International Society for Optical Engineering |
Volume | 5120 |
Publication status | Published - 2003 |
Event | XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers - Wroclaw, Poland Duration: 25 Aug 2002 → 30 Aug 2002 |
Keywords
- Laser signature
- Slab waveguide laser
- Waveguide surface grating