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中红外环间带级联激光器:在标准量子极限处运行

Georg Marschick¹, Jacopo Pelini^2,3, Tecla Gabbrielli^4,5

¹TU Wien-Institute of Solid State Electronics & Center for Micro- and Nanostructures, Gußhausstraße 25-25a, Vienna 1040, Austria.

ACS photonics

|February 26, 2024

概括

这项研究描述了室温,连续波环间波段级联激光器 (ICLs) 发射在3.8μm的噪声. 我们实现了100kHz以上的射击噪声限制性能,有利于精确的中红外应用.

科学领域:

量子光学就是一个量子光学.
激光物理学的激光物理学
中红外技术的中红外技术.

背景情况:

中红外 (MIR) 精度应用受到量子噪声特征的限制.
跨带级联激光器 (ICL) 对于MIR应用 (3-6μm) 是至关重要的,其新的环腔设计显示出有前途.
必须对ICL噪声行为进行彻底的分析,包括降低射击噪声限值.

研究的目的:

为了全面描述在室温下发射3.8μm,连续波 (CW) 环间波段级联激光器 (ICLs) 的噪声特性.
为了研究偏差依赖强度的噪声功率光谱密度和相对强度的噪声.
评估实现射击噪声限制性能的潜力.

主要方法:

在3.8μm工作的CW环ICL的制造和特征.
偏差依赖强度的测量噪声功率光谱密度.
对相对强度噪声 (RIN) 的分析.

主要成果:

对于100kHz以上的富里埃频率,已经证明了射击噪声有限的统计数据.
在室温CW环ICL中详细描述强度噪声特征.
确定了在精密应用中提高灵敏度的潜力.

结论:

室温CW环ICL可以实现射击噪声限制的性能,这对于高灵敏度MIR应用至关重要.
这些激光器在干涉测量和先进光谱学中提高了灵敏度.
这些结果对量子光学具有重要意义,使得能够研究射击噪声极限以下的状态,如压缩状态.

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