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École Polytechnique Fédérale de Lausanne (EPFL) scientists have bypassed light-bending losses that can occur when light pulses exit an optical microresonator, and have uncoupled the pulse repetition rate from the microresonator size by generating multiple solitons in a single microresonator.
Microresonators convert laser light into ultrashort pulses traveling around the resonator’s circumference. These pulses, called dissipative Kerr solitons, can propagate in the microresonator while maintaining their shape. When solitons exit a microresonator, the output light takes the form of a pulse train — a series of repeating pulses with fixed intervals.
The pulse train repetition rate is determined by…READ MORE