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- Title
Innovative Application of Subwavelength Periodic Polystyrene Microspheres as Saturable Absorbers in Nonlinear Optics.
- Authors
Huang, Yancheng; Wang, Hongpei; Chu, Huiyuan; Dai, Hao; Liu, Boyuan; Zhang, Ziyang; Jiang, Cheng
- Abstract
Polystyrene (PS) possesses numerous remarkable properties like high transparency, impressive mechanical strength, and a large specific surface area, making it an excellent mask plate or template for the preparation of anti-opal structures. Moreover, it should be noted that PS also exhibits exceptional nonlinear properties due to the subwavelength periodic configuration. In this paper, a self-assembled PS microsphere photonic crystal saturable absorber (PSM-SA) has been proposed and fabricated. It exhibits impressive properties including high stability, high damage threshold, high refractive index, and large specific surface area. It is suggested that the periodic structure of PS in the film has a significant impact on the photonic band gap, resulting in excellent adjustable optical nonlinear characteristics. By integrating PSM-SA into a self-built ring fiber laser system, a Q-switched laser with a pulse width of approximately 2 μs and a repetition rate of 40 kHz at a wavelength of 1562 nm is obtained. These findings demonstrate its potential for enabling efficient and adjustable nonlinear optical functionalities in various optical devices, contributing to the expanding realm of PS microsphere photonic crystals and their significant impact on advancing nonlinear optics technology.
- Subjects
NONLINEAR optics; Q-switched lasers; PHOTONIC band gap structures; MICROSPHERES; POLYSTYRENE; RING lasers
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 22, p12153
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app132212153