{"product_id":"flat-axicon-lens-pba25-1064-11","title":"Flat Axicon Lens PBA25-1064-10","description":"\u003cp\u003eThe LBTEK Flat Axicon Lens (PB Axicon, PBA) is fabricated on an N-BK7 glass substrate using Liquid Crystal Polymer (LCP) material, featuring a sandwich structure of glass substrates on both sides with an LCP functional film layer in between. In the LCP layer, the fast-axis orientation of the liquid crystal molecules exhibits an equal-period gradient distribution along the radial direction, providing a uniform λ\/2 retardation across the entire device plane.\u003c\/p\u003e\n\u003cp\u003eThe flat axicon lens exhibits polarization-dependent optical characteristics. Depending on the polarization state of the incident beam, it can achieve annular beam focusing or divergence. When the incident light is left-handed circularly polarized, it can generate Bessel beams with non-diffracting and self-healing properties.\u003c\/p\u003e\n\u003cp\u003eCompared to traditional axicon lenses, the flat axicon lens features a planar structure without a three-dimensional conical tip, making it easier to integrate. The structural formation relies on orientation changes of liquid crystal molecules, enabling micron-level fabrication precision with large dispersion characteristics.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLiquid Crystal Polymer\/N-BK7 Window Plate, sandwich flat plate structure\u003c\/li\u003e\n\u003cli\u003eFast axis orientation with equal-period gradient distribution, λ\/2 retardation\u003c\/li\u003e\n\u003cli\u003ePolarization-dependent: achieves annular beam convergence\/divergence and Bessel beams\u003c\/li\u003e\n\u003cli\u003eFlat plate structure enabling high precision and large dispersion\u003c\/li\u003e\n\u003cli\u003eWorking wavelengths: 532, 633, 1064 nm; deflection angles: 0.5°–4.7°\u003c\/li\u003e\n\u003cli\u003eFlexible customization available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFlat Axicon Lens, Clear Aperture Ø20 mm\u003c\/h3\u003e\n\u003cp\u003eDesigned for three operating wavelengths: 532 nm, 633 nm, and 1064 nm. Offers five deflection angles: 0.5°, 1°, 2.0°, 2.3°, and 4.7°, providing flexible adaptation to various working distances. An arrow indicator on the side represents the beam propagation direction.\u003c\/p\u003e","brand":"WaveQuanta","offers":[{"title":"Default Title","offer_id":47499167891610,"sku":"PBA25-1064-10","price":433.41,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6156\/3546\/files\/e8f17eb581b00b34e0f620184cb02ed9_fd33ab1b-5f85-4f8c-b403-f61795ebd4b8.jpg?v=1772280047","url":"https:\/\/waveqvanta.com\/products\/flat-axicon-lens-pba25-1064-11","provider":"WaveQuanta","version":"1.0","type":"link"}