Single pulse formation of wide-range period nonlinear grating in urethane-urea copolymer films using ultraviolet laser-interferometric method

Che YL; Sugihara O; Fujimura H; Egami C; Okamoto N; Tsuchimori M; Watanabe O

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.370, 139-142, 2001

DOI10.1080/10587250108030056 Export Citation

Single pulse formation of wide-range period nonlinear grating in urethane-urea copolymer films using ultraviolet laser-interferometric method

Che YL, Sugihara O, Fujimura H, Egami C, Okamoto N, Tsuchimori M, Watanabe O

Wide-range period grating formation in urethane-urea copolymer film by use of single-pulse UV laser interferometric method is demonstrated. Two types of fabrication setups are introduced. Minimum grating period of 0.4 mum and maximum of 1.5 mm are obtained.

Keywords:nonlinear grating;laser-interferometric method;urethane-urea copolymer