本文關(guān)鍵詞：半導(dǎo)體激光器穩(wěn)頻方法的對比研究　出處：《中北大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 半導(dǎo)體激光器 穩(wěn)頻 頻率調(diào)制 非調(diào)制

【摘要】：激光器自20世紀(jì)60年代誕生以來，由于其具備良好的物理性能，應(yīng)用日益廣泛，發(fā)展迅速。其中，激光器類的外腔半導(dǎo)體激光器由于具備體積小、效率高、使用壽命長等優(yōu)點(diǎn)，在光通信、光交換、高精度干涉測量等近乎整個光電子領(lǐng)域都有長遠(yuǎn)的應(yīng)用，在這些應(yīng)用中都要求激光器具有窄線寬和高頻率的輸出穩(wěn)定性。 論文針對原子干涉儀項(xiàng)目中對激光器穩(wěn)定度的要求,介紹了幾種典型的穩(wěn)頻方法，從是否帶調(diào)制的角度對比分析穩(wěn)頻方法的優(yōu)劣。本文選擇調(diào)制類的穩(wěn)頻方法——飽和吸收穩(wěn)頻法和塞曼（Zeeman）穩(wěn)頻法，非調(diào)制的穩(wěn)頻法——DAVLL（Dichroic-Atomic-VaporLaser Lock）和DFDL（Doppler-free Dichroic Lock）穩(wěn)頻法，分別搭建實(shí)驗(yàn)平臺，對穩(wěn)頻效果進(jìn)行計算評估，通過計算得到飽和吸收穩(wěn)頻法和DAVLL穩(wěn)頻法的鎖頻穩(wěn)定度均為10-9量級，塞曼穩(wěn)頻法和DFDL穩(wěn)頻法的鎖頻穩(wěn)定度均為10-10量級，穩(wěn)頻結(jié)果能基本滿足實(shí)驗(yàn)運(yùn)用的需求，，對以后客觀選擇適合的穩(wěn)頻方法進(jìn)行實(shí)驗(yàn)有一定的幫助。 從實(shí)驗(yàn)系統(tǒng)搭建的復(fù)雜程度、實(shí)現(xiàn)穩(wěn)頻的難易程度以及穩(wěn)頻結(jié)果的好壞綜合對比了這幾種穩(wěn)頻方法的優(yōu)劣。飽和吸收法直接將調(diào)制信號加載到激光器，給激光器引入額外的頻率噪聲，造成激光頻率抖動；外調(diào)制的塞曼穩(wěn)頻法以及無調(diào)制的DAVLL和DFDL穩(wěn)頻方法不會給激光器帶來頻率擾動，而且實(shí)驗(yàn)系統(tǒng)簡單，容易搭建，穩(wěn)頻效果也相對較好。因此，外調(diào)制和無調(diào)制的穩(wěn)頻方法將逐步成為半導(dǎo)體激光器穩(wěn)頻技術(shù)研究的發(fā)展方向。
[Abstract]:Since its birth in 1960s, lasers have been widely used and developed rapidly due to their good physical properties. Among them, lasers with external cavity semiconductor lasers have small volume and high efficiency. Long service life and other advantages, in optical communications, optical switching, high-precision interferometry and other nearly the whole field of optoelectronics has a long-term application. In these applications, the laser is required to have narrow linewidth and high frequency output stability. Aiming at the requirement of laser stability in the atomic interferometer project, several typical frequency stabilization methods are introduced in this paper. The advantages and disadvantages of the frequency stabilization methods are compared and analyzed from the point of view of whether or not the modulation is carried out. In this paper, the modulation methods, saturated absorption frequency stabilization method and Zeeman Zeemann frequency stabilization method, are selected. Unmodulated Frequency Stabilization method DAVLLE-Atomic-VaporLaser Lock and DFDL. Doppler-free Dichroic Lockhart method. The experimental platform was set up to calculate and evaluate the frequency stabilization effect. The results show that the frequency locking stability of the saturated absorption method and the DAVLL method is 10-9 magnitude. The frequency locking stability of Zeeman method and DFDL method are 10-10 orders of magnitude, and the results can basically meet the needs of experimental application. It is helpful to choose the suitable frequency stabilization method in the future. According to the complexity of the experimental system, the difficulty of realizing the frequency stabilization and the result of the frequency stabilization, the advantages and disadvantages of these methods are compared. The saturation absorption method loads the modulated signal directly into the laser. The laser frequency jitter is caused by introducing extra frequency noise to the laser. The external modulation Zeeman frequency stabilization method and the non-modulation DAVLL and DFDL frequency stabilization method will not bring the frequency disturbance to the laser, and the experimental system is simple, easy to build, and the frequency stabilization effect is relatively good. The frequency stabilization method of external modulation and no modulation will gradually become the research direction of frequency stabilization technology of semiconductor lasers.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN248.4

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