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Studies On The All-solid-state Yb:YAG Mode-locked Laser

Posted on:2005-10-25Degree:MasterType:Thesis
Country:ChinaCandidate:G F JuFull Text:PDF
GTID:2168360122987672Subject:Physical Electronics
Abstract/Summary:PDF Full Text Request
In this thesis, theoretical and experimental studies about all-solid-state Yb:YAGmode-locked laser was presented. The main contents are as follows: 1. The development and application of all-solid-state lasers and femtosecond lasers are introduced. A brief introduce on the collimation and focus system of diode lasers was presented. 2. The theoretical problems that needed in the experiment were studied. From the theory of rate equations, the dynamic behaviors of diode-pumped quasi-four-level Yb:YAG laser were investigated, which would be the theoretical groundwork for all-solid-state femtosecond Yb:YAG lasers. In this chapter, the cavity of the laser and mode-lock mechanism were studied. 3. A brief introduce of semiconductor saturable absorber mirror (SESAM) was presented. The three theoretical models ofpassive mode-locking were discussed. The condition for stable mode-locking with a SESAM was analysed. 4. A feasible dispersion compensation scheme was designed. The negative GDD created by prism pair and the positive GVD induced by prism material were theoretically derived. Based on the theoretically formulas, real prism pair needed in our experiment was designed. 5. The experimental studies of Yb:YAG laser was introduced, and the phenomena and results of the experiment were presented. The SESAMs' used in our laser were detailedly introduced. Stable CW mode-locking was obtained. The laser generates as much as 200mW average power at 1047nm in trains of 4 picoseconds pulses with repetitionrate 200MHz. 6. In the last chapter, a summarization and a prospect of our work were presented.
Keywords/Search Tags:femtosecond laser, all-solid-state, SESAM, Yb:YAG
PDF Full Text Request
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