An explanation for the non-uniform grating effects during recording of diffraction gratings in photopolymers

被引:13
作者
Blaya, S. [1 ]
Acebal, P. [1 ]
Carretero, L. [1 ]
Murciano, A. [1 ]
Madrigal, R. F. [1 ]
Fimia, A. [1 ]
机构
[1] Univ Miguel Hernandez, Dept Ciencia Mat Opt & Tecnol Elect, Alicante 03202, Spain
关键词
DYE-SENSITIZED PHOTOPOLYMER; PYRROMETHENE DYE; SHRINKAGE; SYSTEM;
D O I
10.1364/OE.18.000799
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The recent results reported in reference [1] have produced an increased interest in explaining deviations from the ideal behavior of the energetic variation of the diffraction efficiency of holographic gratings. This ideal behavior occurs when uniform gratings are recorded, and the index modulation is proportional to the energetic exposure. As a result, a typical sin(2) curve is obtained reaching a maximum diffraction efficiency and saturation at or below this value. However, linear deviations are experimentally observed when the first maximum on the curve is lower than the second. This effect does not correspond to overmodulation and recently in PVA/acrylamide photopolymers of high thickness it has been explained by the dye concentration in the layer and the resulting molecular weight of the polymer chains generated in the polymerization process. In this work, new insights into these deviations are gained from the analysis of the non-uniform gratings recorded. Therefore, we show that deviations from the linear response can be explained by taking into account the energetic evolution of the index modulation as well as the fringe bending in the grating. (C)2009 Optical Society of America
引用
收藏
页码:799 / 808
页数:10
相关论文
共 28 条
[1]   Self-induced phase gratings due to the inhomogeneous structure of acrylamide photopolymer systems used as holographic recording materials [J].
Belendez, A ;
Fimia, A ;
Carretero, L ;
Mateos, F .
APPLIED PHYSICS LETTERS, 1995, 67 (26) :3856-3858
[2]   Pyrromethene-HEMA-based photopolymerizable holographic recording material [J].
Blaya, S ;
Acebal, P ;
Carretero, L ;
Fimia, A .
OPTICS COMMUNICATIONS, 2003, 228 (1-3) :55-61
[3]   PERYLENE-DOPED AND PYRROMETHENE-DOPED XEROGEL FOR A PULSED-LASER [J].
CANVA, M ;
GEORGES, P ;
PERELGRITZ, JF ;
BRUM, A ;
CHAPUT, F ;
BOILOT, JP .
APPLIED OPTICS, 1995, 34 (03) :428-431
[4]   Acrylamide-N,N′-methylenebisacrylamide silica glass holographic recording material [J].
Carretero, L ;
Murciano, A ;
Blaya, S ;
Ulibarrena, M ;
Fimia, A .
OPTICS EXPRESS, 2004, 12 (08) :1780-1787
[5]  
Costela A., 2001, HDB ADV ELECT PHOTON, V7, P161
[6]   High-performance polymer recording materials for holographic data storage [J].
Dhar, L .
MRS BULLETIN, 2006, 31 (04) :324-328
[7]   MODEL FOR THE EFFECTS OF MATERIAL SHRINKAGE ON VOLUME HOLOGRAMS [J].
GALLO, JT ;
VERBER, CM .
APPLIED OPTICS, 1994, 33 (29) :6797-6804
[8]   Pyrromethene 567 dye as visible light photoinitiator for free radical polymerization [J].
García, O ;
Costela, A ;
García-Moreno, I ;
Sastre, R .
MACROMOLECULAR CHEMISTRY AND PHYSICS, 2003, 204 (18) :2233-2239
[9]   COUPLED WAVE THEORY FOR THICK HOLOGRAM GRATINGS [J].
KOGELNIK, H .
BELL SYSTEM TECHNICAL JOURNAL, 1969, 48 (09) :2909-+
[10]   Characterization of index and surface-relief gratings formed in methacrylate photopolymers [J].
Kojima, T ;
Tomita, Y .
OPTICAL REVIEW, 2002, 9 (05) :222-226