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Dear all;

I tried to tune mode-locked Ti:sapphire lasers(Spectra-Physics:Tsunami) and I
adjusted reflectors of it. Suddenly I lost the laser pathway. (Laser power was
okay and reference power was also okay). I guess the problem is that
optics(mirrors of the reflectors) is out of range.  I don't know exactly.

If you have knowledge about this kind of problem, tell me some information.
And also, tell me some sources(paper or book) about laser tuning.

Thanks in advance

Youngjun Kim