Numerical study of a DoFP polarimeter based on the self-organized nanograting array

Abstract

The self-organized nanograting manufactured by irradiating the transparent materials with the femtosecond laser has aroused wide interests in photonic applications in recent years. Although the mechanism of nanograting formatting has not yet been fully understood, the essential property of the optical birefringence can be precisely acquired by controlling the energy fluence of the femtosecond laser. In this paper, we proposed a novel application of the self-organized nanograting in a division-of-focal-plane polarimeter. Based on the rigid-coupled-wave algorithm, the optical characteristics of the nanograting and the polarimeter were comprehensively analyzed and discussed.

Nanohydrodynamic Local Compaction and Nanoplasmonic Form-Birefringence Inscription by Ultrashort Laser Pulses in Nanoporous Fused Silica

“…During the last decade, the ultrashort-pulse laser inscription of (sub)microscale birefringent nanograting arrays in bulk dielectrics has emerged as a new promising key-enabling technology for the non-destructive, re-writable fabrication of innovative low-loss macro-and micro-optical devices–polarizers, phase elements, etc. [ 1 , 2 , 3 , 4 , 5 ]. This technology utilizes the birefringence/polarization effect of the bulk anisotropic nanogratings and polarization/interference effects in their multiple layers with overall retardance approaching wavelength scale [ 2 , 5 ], rather than its common irreversible densification- [ 6 ] or void-related refractive-index modulation [ 7 ].…”

“…This technology utilizes the birefringence/polarization effect of the bulk anisotropic nanogratings and polarization/interference effects in their multiple layers with overall retardance approaching wavelength scale [ 2 , 5 ], rather than its common irreversible densification- [ 6 ] or void-related refractive-index modulation [ 7 ]. These underlying effects provide additional flexibility in terms of the design, internal arrangement, and spatial scales of laser-inscribed functional optical elements and the ongoing progress of this technology [ 1 , 2 , 3 , 4 , 5 ]. Meanwhile, many conjugate physical processes—(non)linear laser focusing [ 8 ], nanoplasmonic arrangements [ 9 ], and nanoscale material transport mechanisms [ 10 ]—in the focal region during material/refractive-index nanograting formation are still poorly understood.…”

Review of passive polarimetric dehazing methods

“…The imaging polarimeter is a device that can obtain four different linear polarization images simultaneously (linear-Stokes polarimeter) or three linear polarization images and one circular polarization image (full-Stokes polarimeter) with optimal designed structures. 91 The polarimeters are usually based on different technological aspects, such as division of time, [92][93][94][95] division of amplitude, 96 division of aperture, 60,97 division of focal plane, [98][99][100] and Fourier-based. [101][102][103][104] The imaging polarimeter has been thoroughly reviewed in Ref.…”

Defect inspection of optical components based on dark-field polarization imaging and convolutional neural network recognition algorithms

“…However, this problem has been solved perfectly in recent years with the development of the division-of-focal-plane (DoFP) polarization camera. 15,16 The pixelated polarizers with different orientated optical axes were integrated directly on the adjacent detector pixels to achieve linear polarization images in a single shot. 17,18 Furthermore, the linear Stokes parameters (S 0 ; S 1 , and S 2 ) can be calculated from the captured polarization images.…”