本文選題：LD + 泵浦�。� 參考：《長春理工大學(xué)》2015年碩士論文

【摘要】：多波長激光器不僅在煙霧探測、化學(xué)藥品檢測等領(lǐng)域得到廣泛的應(yīng)用,而且在非線性光學(xué)混頻方面也有著重要的意義。傳統(tǒng)獲得多波長激光的方法是利用同一增益介質(zhì)的不同能級躍遷獲得,但是躍遷譜線之間存在著非常激烈的增益競爭,影響了多波長激光輸出的穩(wěn)定性。為了探討在有效避免增益競爭的前提下實現(xiàn)多波長激光輸出的相關(guān)理論,本論文開展了腔內(nèi)泵浦自拉曼三波長連續(xù)激光器機理研究。具體開展的研究內(nèi)容如下:1.分析了準三能級激光、四能級激光及拉曼光的基本原理,并分別推導(dǎo)出了三種波長激光在連續(xù)運轉(zhuǎn)條件下的速率方程組;2.推導(dǎo)出了四能級激光及其拉曼光雙波長激光同時輸出的數(shù)學(xué)模型。在此基礎(chǔ)上,給出了能夠?qū)崿F(xiàn)準三能級激光、四能級激光及拉曼光同時輸出的腔內(nèi)泵浦自拉曼三波長激光器的結(jié)構(gòu)方案,并基于此建立起了用于描述三波長連續(xù)激光器行為特性的數(shù)學(xué)模型;3.基于所建立的數(shù)學(xué)模型進行了數(shù)值模擬,首先得到了四能級激光自拉曼雙波長激光器在不同條件下的輸出特性,在此基礎(chǔ)上,開展了腔內(nèi)泵浦自拉曼三波長連續(xù)激光器的輸出特性研究,并詳細的闡述和分析了每一種輸出特性所對應(yīng)的內(nèi)在機理。
[Abstract]:Multi-wavelength lasers are not only widely used in smoke detection, chemical detection and other fields, but also have important significance in nonlinear optical mixing. The traditional method of obtaining multi-wavelength laser is to use the different energy levels of the same gain medium to obtain it. However, there is a very fierce gain competition between the transition lines, which affects the stability of the multi-wavelength laser output. In order to study the theory of multi-wavelength laser output without gain competition effectively, the mechanism of intracavity pumped self-Raman three-wavelength CW laser is studied in this paper. The specific contents of the study are as follows: 1. The basic principles of quasi three level laser, four level laser and Raman light are analyzed, and the rate equations of three kinds of wavelength laser under the condition of continuous operation are derived respectively. A mathematical model for simultaneous output of a four-level laser and a two-wavelength Raman laser is derived. On the basis of this, the structure scheme of intracavity pumped self-pumped three-wavelength Raman laser, which can realize the simultaneous output of quasi-three-level laser, four-level laser and Raman light, is presented. Based on this, a mathematical model for describing the behavior of three-wavelength CW lasers is established. Based on the established mathematical model, the output characteristics of a four-level laser self-Raman dual-wavelength laser under different conditions are obtained. The output characteristics of intracavity pumped self-Raman three-wavelength CW laser are studied, and the internal mechanism of each output characteristic is described and analyzed in detail.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN248

【參考文獻】

相關(guān)期刊論文 前2條

1 蘇富芳;張行愚;王青圃;李述濤;賈鵬;叢振華;張曉磊;;被動調(diào)Q自拉曼Nd∶GdVO_4激光器[J];光學(xué)學(xué)報;2007年10期

2 段延敏;朱海永;鳳正榮;張耀舉;鄭崇偉;;半導(dǎo)體激光端面抽運Nd:YVO_4自拉曼和頻559nm激光[J];中國激光;2013年05期

相關(guān)碩士學(xué)位論文 前1條

1 郭家錫;579nm外腔式拉曼激光器的數(shù)值計算及實驗研究[D];西北大學(xué);2011年

，

本文編號：1916375