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class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_394383"> 稀土元素掺杂光纤<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器<br /> <br /> StockerYale INC. 创于1946年，主要从事各类视觉光源的应用，同时也生产各类特种光纤以及<a href="http://holographic.oecr.com" target="_blank" class="relatedlink">全息</a>相位掩模板，在国际相关领域有非常高的知名度。在光纤激光器方面Stockeryale 有全套的特种光纤，并在光纤的涂敷，双包层光纤的熔接上都有完整的技术。如图所示为StockerYale 专为光纤激光器生产的双包层光敏光纤。<br /> 目前光纤激光器在国内的市场也逐渐打开，尤其1060nm波段的应用比较广泛，而国内能做成型的光纤激光器光栅对<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>的还没有，所以如果在国内开<a href="http://light.oecr.com" target="_blank" class="relatedlink">发光</a>栅对，再结合Stockeryale 的涂敷技术，会有比较好的市场前景。<br /> <br /> 光纤激光器原理<br /> 对掺杂光纤作为增益介质的光纤激光器的研究始于20世纪60年代，而直到80年代后期，随着光纤制造<a href="http://optics.oecr.com" target="_blank" class="relatedlink">工艺</a>与<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">半导体</a>激光器生产技术的日趋成熟，以及光通讯技术的迅猛发展，大功率光纤激光器领域的研究才取得实质性突破。由于光纤激光器以灵巧的半导体激光二极管作为泵源,以柔软的光纤作为波导和增益介质,同时可采用光纤光栅,耦合器等光纤元件,因此无需光路<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机械</a>调整,结构紧凑,便于集成，其特有的全光纤结构使器件的抗电磁干扰性强，温度膨胀系数小，在频域上应用WDM及光纤<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">传感</a>技术可实现多波长可调谐输出，在时域上结合激光锁模技术可产生几乎没有啁啾的皮秒级超短变换极限光脉冲。与固体激光器和半导体激光器相比，光纤激光器具有无可比拟的优点。目前光纤激光器作为光源在光<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>领域已得到广泛应用，而随着大功率双保层光纤激光器的出现，其应用正向着激光<a href="http://optics.oecr.com" target="_blank" class="relatedlink">加工</a>、图像<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>和生物<a href="http://medicine.oecr.com" target="_blank" class="relatedlink">医疗</a>等更广阔的领域迅速扩展。本文以下内容概述了光纤激光器的基本结构、特点、应用及其发展前景。<br /> 光纤激光器主要由泵源，耦合器，掺稀土元素光纤，谐振腔等部件构成。泵源由一个或多个大功率激光二极管构成，其发出的泵浦光经特殊的泵浦结构耦合入作为增益介质的掺稀土元素光纤，泵浦波长上的光子被掺杂光纤介质吸收，形成粒子数反转，受激发射的光波经谐振腔镜的反馈和振荡形成激光输出。<br /> <br /> <br /> 双包层光敏光纤<br /> 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