Photoinduced permanent gratings inside bulk azodye-doped polymers by the coherent field of a femtosecond laser

Si, Jinhai; Qiu, Jianrong; Zhai, Jianfeng; Shen, Yuquan; Hirao, Kazuyuki
January 2002
Applied Physics Letters;1/21/2002, Vol. 80 Issue 3, p359
Academic Journal
Permanent holographic gratings were fabricated in bulk azodye-doped polymethylmethacrylate by the coherent field of a femtosecond laser. Optical microscopy and atomic force microscopy observations revealed that the gratings consist of two parts, surface relief gratings on both surfaces and refractive index modulated volume gratings in the interior of the polymers. The diffraction efficiency of the first-order Bragg for the gratings was estimated to be 90%. © 2002 American Institute of Physics.


Related Articles

  • Unusual surface reliefs from photoinduced creeping and aggregation behavior of azopolymer. Seungwoo Lee; Yong-Cheol Jeong; Jung-Ki Park // Applied Physics Letters;7/21/2008, Vol. 93 Issue 3, p031912 

    We report the spontaneous formation of unusual surface reliefs, in which two sets of sinusoidal gratings were hierarchically structured, merely by single-step holographic inscription on amorphous azopolymer films. By monitoring of growth behavior of surface reliefs during holographic...

  • Characterization of a high-thermal-stability spiroanthracenefluorene-based blue-light-emitting polymer optical gain medium. Xia, R.; Heliotis, G.; Campoy-Quiles, M.; Stavrinou, P. N.; Bradley, D. D. C.; Doojin Vak; Dong-Yu Kim // Journal of Applied Physics;10/15/2005, Vol. 98 Issue 8, p083101 

    We report the solid-state optical gain characteristics of a spiroanthracenefluorene polymer, namely, poly(9-spiro(10,10-bis(2-ethylhexyl)-10H-anthracene)fluorene) (PEHSAF), specifically designed for thermal stability. An efficient stimulated emission occurs at λ=445 nm under amplified...

  • Femtosecond Laser Direct Writing and Spectroscopic Characterization of Microstructures, Craters, and Gratings in Bulk/Thin Films of Polystyrene. Deepak, K. L. N.; Rao, S. Venugopal; Rao, D. Narayana // AIP Conference Proceedings;10/20/2011, Vol. 1391 Issue 1, p271 

    We present our experimental results obtained from the microfabrication of structures in thin films and bulk of polystyrene (PS). Different microstructures, craters, and gratings were fabricated and detailed physical/optical studies on these structures are presented. Diffraction gratings using...

  • Oscillation frequency tuning characteristics of fiber-extended-cavity distributed-feedback lasers. Liou, K.-Y.; Ku, R. T.; Shen, T. M.; Anthony, P. J. // Applied Physics Letters;2/16/1987, Vol. 50 Issue 7, p380 

    Stable narrow-linewidth (<100 kHz) operation has been demonstrated for a fiber-extended-cavity distributed-feedback (EC DFB) laser emitting at 1.55 μm wavelength. We describe the observed oscillation frequency tuning characteristics of the laser obtained by controlling the temperature and...

  • High-power seven-element grating surface emitting diode laser array with 0.012° far-field angle. Carlson, N. W.; Evans, G. A.; Hammer, J. M.; Lurie, M.; Carr, L. A.; Hawrylo, F. Z.; James, E. A.; Kaiser, C. J.; Kirk, J. B.; Reichert, W. F.; Truxal, D. A.; Shealy, J. R.; Chinn, S. R.; Zory, P. S. // Applied Physics Letters;3/21/1988, Vol. 52 Issue 12, p939 

    A coherent seven-element grating surface emitting diode laser array with a predominant single-lobe far-field pattern having an angular divergence of 0.012° has been demonstrated. The extent of the emitting aperture was 4 mm, and the beam divergence was within 10% of the diffraction limit....

  • Semiconductor lasers with uniform longitudinal intensity distribution. Schrans, Thomas; Yariv, Amnon // Applied Physics Letters;4/16/1990, Vol. 56 Issue 16, p1526 

    Power-dependent nonuniform longitudinal intensity distribution leading to spectral and spatial instabilities is a major problem in semiconductor lasers. It is shown theoretically that a proper choice of the longitudinal distribution of the gain as well as that of the magnitude of the grating...

  • Design considerations of large aperture perpendicular gratings semiconductor ring lasers. Hardy, A.; Dzurko, K.M.; Welch, D.F.; Scifres, D.R.; Lang, R.J.; Waarts, R. // Applied Physics Letters;3/1/1993, Vol. 62 Issue 9, p931 

    Presents the design considerations of large aperture perpendicular gratings semiconductor ring lasers. Analysis on the laser geometry; Contents of the laser cavity; Operation of lasers at a single mode order with modal discriminations.

  • Novel tunable semiconductor lasers using continuously chirped distributed feedback gratings with.... Hillmer, H.; Zhu, H.-L. // Applied Physics Letters;10/24/1994, Vol. 65 Issue 17, p2130 

    Presents experimental and theoretical results obtained from a type of tunable two- and three-section semiconductor distributed feedback (DFB) laser using tailored chirped DFB gratings. Definition of chirped gratings; Achievement of arbitrary and continuous chirping functions; Application of the...

  • Wavelength switching in multicavity lasers. Kanjamala, A.P.; Levi, A.F.J. // Applied Physics Letters;7/21/1997, Vol. 71 Issue 3, p300 

    Uses coupled cavity effects to sequentially switch lasing wavelength at a constant injection current. Advances in fiber Bragg grating technology; Features of the antireflection coated semiconductor laser diode; Role of residual reflectivity from the antireflection coating in determining device...


Read the Article


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

Try another library?
Sign out of this library

Other Topics