Optoelectronics Letters, Volume. 18, Issue 9, 572(2022)
Generation of bottle beam using low-density channel in air
Cylindrical density depressions generated by femtosecond laser pulses filamenting in air for different energy depositions are investigated numerically, by using a set of hydrodynamic equations. The evolution of density profile is calculated for different temperature elevations. The results indicate that the gas density hole is getting shallower and wider with the increasing temperature elevations. A simulation of the propagation inside low-density channel implies a new way to generate a type of bottle beam.
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JI Shaojun, ZHOU Xiaoming, WANG Haitao, ZHANG Jinghui, QIAO Chunhong, FAN Chengyu. Generation of bottle beam using low-density channel in air[J]. Optoelectronics Letters, 2022, 18(9): 572
Received: Feb. 22, 2022
Accepted: Apr. 14, 2022
Published Online: Jan. 20, 2023
The Author Email: Haitao WANG (htwang@aiofm.ac.cn)