Synthesizing gas-filled anti-resonant hollow-core fiber Raman lines enables access to the molecular fingerprint region.

ABSTRACT: The synthesis of multiple narrow optical spectral lines, precisely and independently tuned across the near- to mid-infrared region, is a pivotal research area that enables selective and real-time detection of trace gas species within complex gas mixtures. However, existing methods for developing such light sources suffer from limited flexibility and very low pulse energy, particularly in the mid-infrared domain. Here, we introduce a concept that is based on the combination of an appropriate design of near-infrared fiber laser pump and cascaded configuration of gas-filled anti-resonant hollow-core fiber technology. This concept enables the synthesis of multiple independently tunable spectral lines, with >1 μJ high pulse energies and a few nanoseconds pulse width in the near- and mid-infrare

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11530443 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature