研究目的
Investigating the fabrication and spectroscopic characterization of contaminant free acetylene Photonic MicroCell (PMC) for sub-Doppler spectroscopy applications.
研究成果
The developed contaminant free acetylene PMC demonstrates excellent performance in generating sub-Doppler transparencies using both EIT and SA spectroscopy, with an EIT linewidth showing an asymptotic minimum of 18±3MHz and SA with a contrast of 8% and a linewidth of 17MHz. This PMC offers a promising solution for laser metrology and spectroscopy applications.
研究不足
The technique requires precise control over the vacuum and end-capping process to prevent contamination, and the loss of each end cap is around 1dB.
1：Experimental Design and Method Selection:
The study focuses on the fabrication and spectroscopic characterization of a contaminant free acetylene PMC using EIT and SA spectroscopy.
2：Sample Selection and Data Sources:
A 7 m long section of an IC-HCPCF with a hypocycloid core of an inner diameter of 30μm was filled with acetylene at a pressure of
3：04mbar. List of Experimental Equipment and Materials:
IC-HCPCF, FC/APC connectors, sleeve capillary.
4：Experimental Procedures and Operational Workflow:
The PMC was assembled by end-capping both ends of a HCPCF by collapsing a sleeve capillary under vacuum to prevent air pollution, then polished and mounted onto FC/APC connectors.
5：Data Analysis Methods:
The EIT contrast and FWHM evolution with the pump power was analyzed, fitting well with theoretical expressions.
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