1D Confocal Broad Area Semiconductor Lasers (Confocal BALs) for Fundamental Transverse Mode Selection (TMS#0)

<p>Principal sketch of the confocal resonator with constriction. The transverse beam width<i> b</i> on the facets is considerably larger than the opening width<i> a</i> of the low-pass spatial frequency filter in the middle plane.</p>

Advances in OptoElectronics

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Figure 2

Figure 2: 1D Confocal Broad Area Semiconductor Lasers (Confocal BALs) for Fundamental Transverse Mode Selection (TMS#0) 