کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1536455 996568 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Beam quality of truncated laser beams with amplitude modulations and phase fluctuations in turbulence
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Beam quality of truncated laser beams with amplitude modulations and phase fluctuations in turbulence
چکیده انگلیسی

The closed-form expressions for the Rayleigh range zR and the M2-factor of truncated laser beams with amplitude modulations (AMs) and phase fluctuations (PFs) in turbulence are derived, and the beam quality is studied by taking the zR and the M2-factor as the characteristic parameters of beam quality. The M2-factor of truncated laser beams with AMs and PFs is always larger than that of truncated Gaussian beams both in free space and in turbulence. However, in turbulence the beam quality of truncated laser beams with AMs and PFs may be better than that of truncated Gaussian beams if the zR is taken as the characteristic parameter of beam quality. For laser beams with AMs and PFs in turbulence, the beam quality expressed in terms of zR is consistent with that in terms of the M2-factor versus the phase fluctuation parameter α, but not versus the intensity modulation parameter σA. The beam quality of truncated laser beams with AMs and PFs is less sensitive to turbulence than that of truncated Gaussian beams. The beam quality of laser beams with smaller α and larger σA is less affected by turbulence than those with larger α and smaller σA.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 285, Issue 24, 1 November 2012, Pages 4793–4801
نویسندگان
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