Double-Cycle Alternating-Flow Diode Pumped Potassium Vapor Laser

Autor: Songyang Liu, Rongqing Tan, Wenning Xu, Fangjin Ning, Zhiyong Li
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Photonics, Vol 11, Iss 5, p 391 (2024)
Druh dokumentu: article
ISSN: 2304-6732
DOI: 10.3390/photonics11050391
Popis: A novel double-cycle alternating-flow diode-pumped potassium vapor laser is proposed, theoretically modeled and simulated. The results show that the optical-to-optical efficiency of the laser increases with increasing gas flow rates, although at high flow rates the rate of increase in efficiency decreases. The optical-to-optical efficiency reaches 74.8% at a pump power density of 30 kW/cm2 and a gas flow rate of 50 m/s. The optical-to-optical efficiency of the laser is greater with a narrow linewidth pump and high buffer gas pressure. The optical-to-optical efficiency of a flow gas cell is higher than that of a static gas cell. There is an optimal gas cell length that provides the highest optical-to-optical efficiency. At higher pump power densities, higher flow rates are required to obtain higher optical-to-optical efficiencies.
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