Temporal dynamics of stimulated emission with applications in nuclear quantum optics

TL;DR

This paper investigates the temporal behavior of stimulated emission in nuclear systems, focusing on x-ray interactions with nuclei, and proposes methods to detect stimulated emission amidst background noise, with potential applications in nuclear quantum optics.

Contribution

It introduces new detection strategies for stimulated emission in nuclear systems and explores phase-sensitive control in low-excitation regimes, advancing nuclear quantum optics research.

Findings

Stimulated emission overlaps with stimulating pulses, complicating detection.

Reduced delayed scattered light intensity can serve as an alternative signature.

Phase-sensitive methods enable better control and detection of stimulated emission.

Abstract

The temporal dynamics of stimulated emission is studied, with the particular emphasis on stimulated emission induced by x-ray pulses interacting with nuclei. In typical nuclear forward scattering experiments, the short incident x-ray pulse is accompanied by a huge number of off-resonant background photons. This prompts the question, if stimulated emission can be observed in the delayed nuclear scattering signal which is emitted after the incident pulse has passed. We find that the stimulated photons essentially overlap with the stimulating pulse. To overcome this problem, we identify the reduction of the delayed scattered light intensity as alternative signature for the stimulated emission. We further study a phase-sensitive variant of stimulated emission in the low-excitation regime, which provides convenient control parameters to facilitate the detection. Finally, we analyze the possibility to observe stimulated emission in nuclei driven by free electron lasers or synchrotron radiation sources.