Ultralow noise mode-locked laser and RF sinewave source

Coherent light generators – Particular beam control device – Optical output stabilization

Reexamination Certificate

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C372S018000

Reexamination Certificate

active

07978740

ABSTRACT:
Systems, devices and methods of generating both a precision electrical timing signal as well as a precision optical timing signal. A novel, modified opto-electronic loop oscillator is used to drive a harmonic mode-locked laser. A novel opto-electronic loop has a larger “Q” factor by increasing the electrical loop oscillating frequency ω0by using a beat note created by the selection of two optical longitudinal modes from the mode-locked laser. The beat note is detected and divided down to drive a modulator that mode-locks the laser. The frequency division stage also reduces the noise.

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