Single-frequency operation of a broad-area laser diode by injection locking of a complex spatial mode via a double phase conjugate mirror.
We demonstrate what is believed to be the first phase-coherent locking of a high-power broad-area diode to a single-frequency master laser. We use photorefractive double phase conjugation to lock the diode in a self-optimized complex spatial mode while the photorefractive crystal diffracts that complex mode in a near-diffraction-limited beam.
van Voorst
P D
PD
Department of Physics, Twente University, Enschede, The Netherlands. p.d.vanvoorst@utwente.nl
Offerhaus
H L
HL
Boller
K J
KJ