Reconstruction of Wavefront Aberration of 100-TW Ti:sapphire Laser Pulse Using Phase Retrieval Method

Abstract

A phase retrieval method using an error reduction algorithm is developed for reconstructing a wavefront aberration of an 100-TW Ti:sapphire laser pulse from the measurement of a focal spot. The phase retrieval method can successfully reconstruct a wavefront aberration of a 100-TW Ti:sapphire laser pulse, and the reconstructed wavefront aberration shows a good agreement with the wavefront aberration measured with a wavefront sensor. The effect of the dynamic range and the intensity noise on the reconstruction is also investigated in reconstructing a wavefront aberration of an 100-TW Ti:sapphire laser pulse.

270-W 15-kHz MOPA System Based on Side-pumped Rod-type Nd:YAG Gain Modules

“…2, the maximal smallsignal gain was 2.3, and the thermal focal length decreased down to 190 mm at maximal pumping. The ther- mal focal length was measured by finding the position of minimal spot size after the module because very rigorous methods based on wavefront measurement [11,12] are not necessary in our case. Figure 3 shows the depolarization loss of the gain module caused by thermal birefringence.…”

Noise-robust Phase Gradient Retrieval Formulation for Phase-shifting Interferometry

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Programmable optics for ultrashort pulse management: devices and applications

“…To compare our results, we also calculated the aberrated wavefront with the Fresnel phase retrieval method using the conventional iterative fourier transform algorithm (IFTA) [127,128]. We considered that the intensity over the SLM was constant and measured the focal irradiance pattern generated by the whole DL.…”