Abstract
Modal analyses of Talbot cavity eigenmodes are performed for a finite diode laser array using a simple finite external mirror and a patterned external mirror. At a full round-trip Talbot length, the in-phase and oscillating-phase modes of the cavity with a simple flat mirror have slightly different thresholds. The increased modal separation from a patterned-mirror Talbot resonator is shown to be larger than a flat-mirror resonator with a round-trip distance of half a Talbot length. In all these cases, steady-state oscillation is shown to consist of either the in-phase or oscillating-phase mode. The inherent flaw of the Talbot resonator suggested by P. Latimer [Appl. Phys. Lett. 62, 217 (1993)] is thus shown to be a simple matter of modal separation rather than a "violation of the widespread assumption of grating self-imaging".
Original language | English (US) |
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Pages (from-to) | 2937-2939 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 64 |
Issue number | 22 |
DOIs | |
State | Published - 1994 |
Bibliographical note
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