High reflective diffraction grating for ultrafast pulse compression

Galina Kalinchenko; Stepan Vyhlidka; Daniel Kramer; Alexander Lerer; Bedrich Rus

doi:10.1117/12.2185696

12 May 2015 High reflective diffraction grating for ultrafast pulse compression

Galina Kalinchenko, Stepan Vyhlidka, Daniel Kramer, Alexander Lerer, Bedrich Rus

Proceedings Volume 9513, High-Power, High-Energy, and High-Intensity Laser Technology II; 95130K (2015) https://doi.org/10.1117/12.2185696
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

A diffraction grating based on all-dielectric multi-layer structure is designed for compression of ultrafast pulses with spectrum centered at 900 nm. The grating at Littrow angle with an out-of-plane configuration shows more than 96% efficiency over the reflective band of 100 nm for the angle of incidence 41 degrees. We suggest grating grooves and the very first layer under the grooves to be made of fused silica. Reflective mirror under corrugated layer is designed as a stock of three types of dielectric nanolayers. Tolerances for groove depth and angle of incidence are estimated and, optimal duty-cycle parameter is found out. Electric field distribution inside of the grating is also numerically studied. The model is simulated by two methods: numerical Fourier Modal Method in LightTrans Virtual Lab and semi-analytical Volume Integral Equation Method. The results obtained by both methods show an excellent agreement.

Citation Download Citation

Galina Kalinchenko, Stepan Vyhlidka, Daniel Kramer, Alexander Lerer, and Bedrich Rus "High reflective diffraction grating for ultrafast pulse compression", Proc. SPIE 9513, High-Power, High-Energy, and High-Intensity Laser Technology II, 95130K (12 May 2015); https://doi.org/10.1117/12.2185696

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