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.

此应用的目标是研究通过环路谐振器中的增益光栅注入锁定的脉冲振荡器。与最先进的频率稳定方案相比，这种方案的巨大优点是其无需任何主动稳定电路或执行器即可实现高精度频率稳定性的潜力。稳定的单片非平面环形振荡器将用作注入高功率环路的种子激光器。环形谐振腔镜之一是激光活性材料中的增益光栅，其位置不固定，因此可以补偿谐振腔长度的波动。由于形成增益光栅的相干光束要求以及增益光栅本身的布拉格选择性，单频操作可以在环路振荡器中很好地实现。环路振荡器的频率锁定尚未得到证实，该环路振荡器发射的脉冲具有纳秒持续时间，能量在 mJ 范围内，且种子激光器和环路振荡器的频率相同或几乎相同，偏差低于 MHz。这个应用程序。将详细研究环路的谐振行为。不带主动稳定功能的注入锁定脉冲固态激光振荡器将是物理和技术领域许多任务的重大进步，特别是对于移动激光雷达应用。从长远来看，这种方案可以扩展到连续波注入锁定，或者可以应用于激光源的相干组合。