An improved beam waist formula for ultrashort, tightly focused linearly, radially, and azimuthally polarized laser pulses in free space
Author(s)Wong, Liang Jie; Kaertner, Franz X.; Johnson, Steven G.
Improved beam waist formula for ultrashort, tightly focused linearly, radially, and azimuthally polarized laser pulses in free space
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We derive an asymptotically accurate formula for the beam waist of ultrashort, tightly focused fundamental linearly polarized, radially polarized, and azimuthally polarized modes in free space. We compute the exact beam waist via numerical cubature to ascertain the accuracy with which our formula approximates the exact beam waist over a broad range of parameters of practical interest. Based on this, we describe a method of choosing parameters in the model given the beam waist and pulse duration of a laser pulse.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Department of Mathematics
Optical Society of America
Wong, Liang Jie, Franz X. Kaertner, and Steven G. Johnson. “Improved Beam Waist Formula for Ultrashort, Tightly Focused Linearly, Radially, and Azimuthally Polarized Laser Pulses in Free Space.” Optics Letters 39, no. 5 (March 1, 2014): 1258.
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