Font Size: a A A

Study On Narrow Linewidth1336.6nm Laser Technology

Posted on:2016-04-14Degree:MasterType:Thesis
Country:ChinaCandidate:H LiFull Text:PDF
GTID:2298330452964979Subject:Electronic Science and Technology
Abstract/Summary:PDF Full Text Request
Lasers operating at1.3μm have received a large amount of interest in recent years since theirpromising range of applications in laser medicine, spectroscopy, fiber communications system, themilitary and frequency-doubled red lasers, etc. The development of27Al+optical frequency standardurgently needs1336.632nm lasers with high wavelength accuracy, narrow linewidth and goodstability. T which this paper is mainly devoted to this. As a new laser material, Nd:GYSGG crystalhas many merits. For example, its effective segregation coefficient is high, which can be easier toobtain high concentration and homogeneous doping crystal; besides, its fluorescent lifetime is long,so it was can be adopted as an gain medium for1336.6nm laser. The main contents of this thesisare included as follows:1. We successfully developed the narrow linewidth1336nm Nd:GYSGG laser with twistedmode cavity. The Nd:GYSGG rods were side pumped by808nm quasi continuous wave diodelasers with1ms pulse width and a pulse repetition frequency of10Hz. The combination of Twoquarter waveplates and a55.4°polarizer can eliminate standing-wave distribution in the gainmedium, and so as to obtain single wavelength laser output, the birefringent filter and0.3mm FPetalon were used here for wavelength adjusting. a maximum average output power of1.848W at1336.46nm was achieved under the average pump power of47W.2. The calculate method of loss difference was obtained through related literature, and wecompleted the design of monolithic nonplanar ring oscillator through matlab and solidworks.3. A narrow linewidth acousto-optic Q-switched Nd:GYSGG ring laser at1336.6nm wasinitially developed. The Nd:GYSGG rods were side pumped by808nm quasi continuous wavediode lasers with1ms pulse width and a pulse repetition frequency of10Hz. With an incidentpump power of42.3W, a maximum average output power of367mW at1336.6nm withlinewidth less than0.85pm and a pulse width of300ns was obtained at a repetition rate of80Hz, corresponding to an energy peak power of15.3kW.
Keywords/Search Tags:All-solid-state laser, Single-frequency, Narrow linewidth, Acousto-optic Qswitch, Ring cavity
PDF Full Text Request
Related items