Laser & Optoelectronics Progress, Volume. 59, Issue 23, 2323001(2022)
Fabrication, Characterization and Annealing of Linear Variable Optical Filter in Visible Spectral Region
Fig. 2. Device for sample preparation. (a) Physical map of the sample stage; (b) physical map of the control unit
Fig. 4. Optical constants of TiO2 and SiO2. (a) Refractive index; (b) extinction coefficient
Fig. 5. Simulated spectra. (a) Simulated reflectance spectra of (SiO2/TiO2)3; (b) simulated transmittance spectra of the LVOF
Fig. 6. Measured transmittance spectra. (a) Theoretical simulated spectra and the measured transmission spectra of the as-prepared and annealed samples when the cavity layer thickness is 200 nm; (b) transmission spectra of the F-P resonant cavity device and LVOF with a cavity thickness of 290 nm
Fig. 7. Transmission spectra of the sample. (a) As-prepared; (b) annealed at 200 °C; (c) annealed at 300 °C; (d) annealed at 400 °C
Fig. 8. Resonance peak center wavelength versus sample position. (a) Transmission spectra of samples with different annealing temperatures; (b) transmission spectra of samples with different annealing times; (c) relationship between the resonance peak wavelength of the annealed samples and the position of the samples
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Kang Ni, Ertao Hu, Min Wang, Jing Wang, Ankang Li, Yibo Lin, Wei Wei. Fabrication, Characterization and Annealing of Linear Variable Optical Filter in Visible Spectral Region[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2323001
Category: Optical Devices
Received: Oct. 26, 2021
Accepted: Nov. 8, 2021
Published Online: Nov. 28, 2022
The Author Email: Hu Ertao (iamethu@njupt.edu.cn)