Abstract
We measured the higher-order modes of a diffractive-optic graded-phase resonator by suppressing the lower-order modes of a flash-lamp-pumped Nd:YAG laser with spatial filters. A diffractive-optic end mirror was used to establish a flattop fundamental mode. Measurements of the fundamental and higher-order mode shapes agreed with theoretical models. Quantitative measurements of modal discrimination substantiate the predictions of large discrimination between the fundamental and second-order modes.
Original language | English (US) |
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Pages (from-to) | 663-665 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 20 |
Issue number | 7 |
DOIs | |
State | Published - Apr 1995 |