The development of the Scanning Laser Ophthalmoscope is reviewed from a historical perspective. Since a flying-spot scanning principle for an electro-optical ophthalmoscope was first disclosed in 1950, enabling milestones have included the introduction of the laser and inversion of the usual Gullstrand's configuration of optical pupils in 1977, and the application of the optical principle of co...

We report on kilohertz-repetition-rate flame temperature measurements performed using blue diode lasers. Two-line atomic fluorescence was performed by using diode lasers emitting at around 410 and 451 nm to probe seeded atomic indium. At a repetition rate of 3.5 kHz our technique offers a precision of 1.5% at 2000 K in laminar methane/air flames. The spatial resolution is better than 150 microm...

Near-field dynamics of broad area diode laser at very high pump levels Martin Hempel,1,a Jens W. Tomm,1 Martina Baeumler,2 Helmer Konstanzer,2 Jayanta Mukherjee,3 and Thomas Elsaesser1 1Max-Born-Institut, Max-Born-Str. 2 A, 12489 Berlin, Germany 2Fraunhofer Institut für Angewandte Festköperphysik, Tullastrasse 72, 79108 Freiburg, Germany 3Advanced Technology Institute, University of Surrey, Gui...

Semiconductor lasers with optical feedback have chaotically pulsating output behavior. When two similar chaotic lasers are optically coupled, they can become synchronized in their optical fluctuations. Here we show that the synchronization is not only in the amplitude and in the timing of the pulses but that the short pulses are also phase coherent with each other. This is true even when the la...