Higher-order S-waveplate converts linear polarization to higher-order polarization patterns.
The fabrication of s-waveplates is based on the inscription of self-organized nanograting’s inside fused silica glass using a femtosecond laser.
LIDT measurements at fs regime (full report) and ns regime (full report) show our S-waveplates have laser irradiation resistance similar to uncoated fused silica substrates. LIDT value measured at 1064 nm, ~10 ns is 63,4 J/cm² and it is not dropping while increasing exposure time. It proves, our waveplates are very high performance and suitable for high power laser applications.
Examples of fast axis patterns for 2nd (left), 3rd (center), and 4th (right) order S-Waveplates (measured with Hinds Instruments Exicor MicroImager).
Combining HOS with an axicon enables vector Bessel beams (VBBs) to be obtained that can be used for the efficient drilling of transparent materials.
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| Beam spatial intensity profiles of the 1’st, 4’th and 6’th order vector Bessel-Gauss beams (a, d, g) and their single polarization component spatial intensity distribution when polarizer was rotated at two different angles. When the polarizer was parallel to incoming polarization (0 deg) beam intensity profiles are depicted in second column and when polarizer was perpendicular (90 deg) beams are depicted in third column. | Transparent material modification on the D263t glass sample surface with higher order VBB‘s and their transverse polarization components. 1’st, 4’th and 6’th order VBB damages are depicted in a, d, and g respectively. The single polarization component of the appropriate VBB are depicted in second and third column. |
S-waveplate brochure (pdf / English)
LIDT result fs regime (pdf / English)
LIDT result ns regime (pdf / English)
