Demonstration and investigation of pulsed injected locked solid-state laser oscillators with high frequency stability due to gain gratings without any active stabilization

脉冲注入锁定固态激光振荡器的演示和研究由于没有任何主动稳定的增益光栅而具有高频率稳定性

基本信息

批准号：
96663011
负责人：
Professor Dr. Ralf Menzel, since 4/2010
金额：
--
依托单位：
IBL Innovative Berlin Laser GmbH
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2009
资助国家：
德国
起止时间：
2008-12-31 至 2011-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/96663011?language=en
关键词：
Demonstration investigation pulsed injected locked

项目摘要

The goal of this application is to investigate pulsed oscillators injection locked via gain gratings in loop resonators. The great advantage of such a scheme is its potential for high precision frequency stability without the need for any active stabilization circuit or actuator in contrast to state of the art frequency stabilization schemes. A stable monolithic non-planar ring oscillator will be used as seed laser that is injected into the high power loop. One of the loop resonator mirrors is a gain grating in the laser active material which is not fixed in position and thus can compensate for fluctuations of the resonator length. Single frequency operation can be realised very well in loop oscillators because of the coherence beam requirements to form the gain gratings and the Bragg selectivity of gain gratings themselves. A frequency locking of a loop oscillator emitting pulses with nanosecond duration, and energy in the mJ-range with identical frequencies or almost identical frequencies of the seed laser and loop oscillator with sub-MHz deviation was not demonstrated yet and will be in the focus of this application. The resonance behaviour of the loop will be investigated in detail. An injection locked pulsed solid state laser oscillator without active stabilization would be a major advance for many tasks in physics and technology especially for mobile lidar applications. In perspective such a scheme could be extended to continuous-wave-injection locking, or could be applied for coherent combination of laser sources.

该应用的目的是研究通过循环谐振器中的增益光栅锁定的脉冲振荡器注入。这种方案的最大优势是它具有高精度频率稳定性的潜力，而与最先进的频率稳定方案相比，不需要任何主动稳定电路或执行器。稳定的单片非平面环振荡器将用作种子激光器，并注入高功率回路中。循环谐振镜之一是激光活性材料中的增益光栅，该材料未固定在位，因此可以补偿谐振器长度的波动。单个频率操作可以很好地实现在循环振荡器中，因为具有相干的光束要求，以形成增益光栅和增益光栅本身的Bragg选择性。环路振荡器的频率锁定持续持续时间的发射脉冲，以及在MJ范围内具有相同频率或几乎相同频率的种子激光器和带子MHz偏差的循环振荡器的频率，并且将尚未证明，并且将是该应用的重点。循环的共振行为将进行详细研究。注射锁定的固态激光振荡器没有主动稳定，将是物理和技术中许多任务的重大进步，尤其是对于移动激光雷达应用。从角度来看，这种方案可以扩展到连续的波注射锁定，也可以应用于激光源的连贯组合。