Equal-intensity beam splitter fabricated by vortex half-wave plate for passive laser speckle reduction

2021 ◽  
Author(s):  
Zhaomin Tong ◽  
Yuxiang Yan ◽  
YIFEI MA ◽  
mei wang ◽  
Suotang Jia ◽  
...  
Keyword(s):  
Beam Splitter ◽  
Laser Speckle ◽  
Speckle Reduction ◽  
Half Wave Plate ◽  
Wave Plate ◽  
Half Wave

Passband-Flattened Frequency-Tunable Optical Fiber Multiwavelength Filter with Composite Combination of Waveplates

2021 ◽  
Vol 21 (8) ◽  
pp. 4200-4207
Author(s):  
Jaehoon Jung ◽  
Yong Wook Lee
Keyword(s):  
Beam Splitter ◽  
Orientation Angle ◽  
Quarter Wave Plate ◽  
Half Wave Plate ◽  
Wave Plate ◽  
Half Wave ◽  
Quarter Wave ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining ◽  
Frequency Tunable

We propose a passband-flattened frequency-tunable optical multiwavelength filter with a composite combination of waveplates, which is realized by harnessing a polarization-diversified loop structure. The proposed filter comprises a polarization beam splitter (PBS), two polarization-maintaining fiber (PMF) segments of equal length, an ordered waveplate combination (OWC) of a half-wave plate (HWP) and a quarter-wave plate (QWP) before the first PMF segment, and an OWC of a QWP and an HWP before the second PMF segment. The second PMF segment is butt-coupled to one port of the PBS so that its slow axis is oriented at 22.5° for the horizontal axis of the PBS. Based on the filter transmittance derived through the Jones calculus, we found the orientation angle (OA) sets of the four waveplates, which could induce an extra phase shift Φ from 0° to 360° in the passband-flattened transmittance function. From the transmission spectra calculated at the eight selected OA sets, which caused Φ to increase from 0° to 315° by steps of 45°, it was confirmed that the passband-flattened multiwavelength spectrum can be continuously tuned by properly controlling the OAs. This indicates continuous wavelength tunability based on composite OWCs. Then, this theoretical prediction was verified by experimental demonstration.

scholarly journals Polypropylene embedded metal mesh broadband achromatic half-wave plate for millimeter wavelengths

2011 ◽  
Vol 50 (21) ◽  
pp. 3750 ◽  
Author(s):  
Jin Zhang ◽  
Peter A. R. Ade ◽  
Philip Mauskopf ◽  
Giorgio Savini ◽  
Lorenzo Moncelsi ◽  
...  
Keyword(s):  
Half Wave Plate ◽  
Metal Mesh ◽  
Wave Plate ◽  
Millimeter Wavelengths ◽  
Half Wave

scholarly journals Switchable Quarter-Wave Plate and Half-Wave Plate Based on Phase-Change Metasurface

2020 ◽  
Vol 12 (2) ◽  
pp. 1-10 ◽  
Author(s):  
Yaru Li ◽  
Jun Luo ◽  
Xiong Li ◽  
Mingbo Pu ◽  
Xiaoliang Ma ◽  
...  
Keyword(s):  
Phase Change ◽  
Quarter Wave Plate ◽  
Half Wave Plate ◽  
Wave Plate ◽  
Half Wave ◽  
Quarter Wave

Achromatic half-wave plate for submillimeter instruments in cosmic microwave background astronomy: experimental characterization

2006 ◽  
Vol 45 (27) ◽  
pp. 6982 ◽  
Author(s):  
Giampaolo Pisano ◽  
Giorgio Savini ◽  
Peter A. R. Ade ◽  
Vic Haynes ◽  
Walter K. Gear
Keyword(s):  
Cosmic Microwave Background ◽  
Experimental Characterization ◽  
Microwave Background ◽  
Half Wave Plate ◽  
Wave Plate ◽  
Half Wave

scholarly journals Optimization of the half wave plate configuration for the LSPE-SWIPE experiment

2017 ◽  
Vol 841 ◽  
pp. 012001 ◽  
Author(s):  
A Buzzelli ◽  
G de Gasperis ◽  
P de Bernardis ◽  
S Masi ◽  
N Vittorio
Keyword(s):  
Half Wave Plate ◽  
Wave Plate ◽  
Half Wave
Sign in / Sign up

Export Citation Format

Share Document