Flexible, H-bond mediated bromophenol blue/poly(vinyl alcohol) composite for efficient laser filter application

• Published in: Optical and quantum electronics Vol. 54; no. 1
• Main Authors: Ghoshal, Debopriyo, Bhattacharya, Debopriya, Mondal, Dheeraj, Das, Sukhen, Bose, Navonil, Basu, Mousumi
• Format: Journal Article
• Language: English
• Published: New York Springer US 2022; Springer Nature B.V
• Subjects: Blocking; Bromophenol blue; Characterization and Evaluation of Materials; Computer Communication Networks; Electrical Engineering; High power lasers; Lasers; Optical Devices; Optical properties; Optics; Optoelectronics; Photonics; Physical properties; Physics; Physics and Astronomy; Polymer matrix composites; Polyvinyl alcohol; Structural analysis; Thickness; Tunable lasers; BPB/PVA composite film; Flexible; Laser filter; Optical properties; Mechanical property
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-021-03364-2

Dye/polymer composites have found immense importance in the optoelectronics device applications in the last few years. Here, we report fabrication of flexible, self-standing, multiband laser-filters based on bromophenol blue (BPB)/polyvinyl alcohol (PVA) composite films. Structural, mechanical and optical properties of the BPB/PVA (0.1, 1.0 and 2.0 wt% BPB) composites were investigated. Alterations in the physical properties of the composites have been supported by the structural analysis (XRD and FTIR). Modified optical band gap and the flexibility of the composites have been studied thoroughly. The composite films have been successfully used as high power laser blocking filter applicable in multiple wavelength bands. A fabricated 2.0 wt% BPB/PVA composite film of thickness 250 ± 30 µm can block and withstand high power laser (5.7 mW) for a long period of time. Therefore, these flexible, tunable, multiband laser-filters can be suitably used in modern optoelectronics applications.