Beam intensity reshaping by pump modification in a laser amplifier

Igor A. Litvin, Oliver John Philip Collett, Gary King, Hencharl J. Strauss

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We propose a new technique for laser beam shaping into adesirable beam profile by using a laser amplifier with a pump beam that has a modified intensity profile. We developed the analytical formula, which describes the transformation of the seed beam into the desired beam profile in a four level amplifiers small signal regime. We propose a numerically method to obtain the required pump intensity profile in the case where high pump power saturated the laser crystal or for three level materials. The theory was experimentally verified by one dimensionally shaping a Gaussian shaped seed into a Flat-Top beam in a Ho:YLF amplifier pumped by a Tm:YLF laser with a HG01 intensity profile.

Original languageEnglish
Pages (from-to)30165-30176
Number of pages12
JournalOptics Express
Volume23
Issue number23
DOIs
Publication statusPublished - 16 Nov 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Litvin, I. A., Collett, O. J. P., King, G., & Strauss, H. J. (2015). Beam intensity reshaping by pump modification in a laser amplifier. Optics Express, 23(23), 30165-30176. https://doi.org/10.1364/OE.23.030165