Enhancing the inscription rate of surface relief gratings with an incoherent assisting light beam

Ke Yang; Suizhou Yang; Xiaogong Wang; Kumar, Jayant
May 2004
Applied Physics Letters;5/31/2004, Vol. 84 Issue 22, p4517
Academic Journal
A beam of light that is incoherent to the recording beams and has its polarization orthogonal to the recording beams is shown to assist the recording process of azo-functionalized polymers through the enhancement of trans–cis–trans cycling. Recording with s:s polarization has earlier been shown to result in very small surface modulations. However, with the help of an incoherent assisting beam, it can record a large surface modulation with a diffraction efficiency of 20.7%. The incoherent assisting beam also leads to an acceleration of the grating formation rate for the recording beams with p:p and 45°:45° polarization. © 2004 American Institute of Physics.


Related Articles

  • Grating beamsplitters grow in complexity. Brown, David R. // Laser Focus World;Dec2003, Vol. 39 Issue 12, p73 

    Presents a case study for a hole-drilling application, highlighting the evolution of diffractive beamsplitters, from devices that produced a one-dimensional line of beams to a complex power distribution of a two-dimensionally array of beams. Overview of diffractive beamsplitetrs; Details of the...

  • Twisted phase gratings induced by photoregulated mesogenic molecules on the surface of photoreactive polymer liquid crystal film. Ono, Hiroshi; Sasaki, Tomoyuki; Emoto, Akira; Uchida, Emi; Kawatsuki, Nobuhiro // Applied Physics Letters;12/25/2006, Vol. 89 Issue 26, p261918 

    Three-dimensional phase gratings with twisted structures were self-organized by photoregulated mesogenic molecules on the surface of photocrosslinkable polymer liquid crystal film. The molecules are selectively photoreacted only at the surface of the film under the polarization holographic...

  • Laser gain in femtosecond microstructured Nd:MgO:LiNbO3 crystals. Torchia, G.A.; Mendez, C.; Arias, I.; Roso, L.; Ródenas, A.; Jaque, D. // Applied Physics B: Lasers & Optics;Jun2006, Vol. 83 Issue 4, p559 

    Femtosecond laser writing has been used to create 1D and 2D diffracting microstructures in Nd3+:MgO co-doped LiNbO3 crystals. The main characteristics of the diffracting device, such as its polarization dependence and diffraction efficiency have been investigated, showing that first order...

  • Three-port beam splitter based on a sandwiched grating with an improved aspect ratio. WENHAO SHU; BO WANG; HONGTAO LI; WENHUA LI; LI CHEN; LIANG LEI; JINYUN ZHOU // Optica Applicata;2015, Vol. 45 Issue 3, p279 

    In this paper, a fused-silica transmission grating used as a three-port beam splitter is designed by using the rigorous coupled-wave analysis, which is based on the sandwiched grating structure at the wavelength of 800 nm under normal incidence. Firstly, it is feasible to realize such a grating...

  • Optically controlled holographic beam splitter. De Sio, Luciano; Tedesco, Alessandro; Tabirian, Nelson; Umeton, Cesare // Applied Physics Letters;11/1/2010, Vol. 97 Issue 18, p183507 

    We present the results of realization and study of a light beam splitting effect based on a full-optically controlled holographic diffraction grating. The high quality, light responsive, periodic structure, which is exploited as tunable beam splitter, is monitored by combining its zero and first...

  • Design of wire-grid polarizer with effective medium theory. Liao, Yan-Lin; Zhao, Yan // Optical & Quantum Electronics;May2014, Vol. 46 Issue 5, p641 

    A design concept of a wire-grid polarizer, which is based on the effective-medium theory, has been proposed. The effective indices of a wire-grid grating are evaluated with the effective-medium theory. The results show that, the wire-grid grating acts as a metal for TE polarization, but it...

  • Making waves. Blackman, Greg // Electro Optics;Aug/Sep2009, Issue 201, p14 

    The article looks at ideal applications for diffractive optics and the benefits they provide. Examples of diffractive optical elements (DOEs) are diffraction gratings and beam splitters. Wave propagation can be attributed to the effects of diffraction. Particular focus is given to the two basic...

  • Evidence of a density grating under light induced formation of surface relief gratings at polymers containing azobenzene moieties. Pietsch, Ullrich; Rochon, Paul // Journal of Applied Physics;7/15/2003, Vol. 94 Issue 2, p963 

    The formation of a surface relief grating (SRG) on polymer films containing azobenzene moieties has been inspected during exposure with counter-rotating circularly polarized light of λ[SUBwrite] =488 nm by probing the diffracting efficiency of a second low power laser. In particular, the...

  • Polarization-independent two-port beam splitter grating under second Bragg incidence angle with usual duty cycle. Wang, Bo // Optica Applicata;2012, Vol. 42 Issue 1, p69 

    Based on the total internal reflection (TIR) under second Bragg incidence angle, polarization--independent two-port beam splitter grating etched in fused silica is described for the usual duty cycle of 0.5. There are three diffraction orders in the reflection: --2nd order, --1st order, and 0th...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics