Tunable tandem laser consisting of self-pulsating two section dfb laser for generating an optical clock frequency

摘要

A tuneable, self-pulsing more champagne ion - laser to the optical clock frequency generating with two pumped-up dfb lasers - sections -, which by means of an offset of their two, at least to the phase velocity of the light wave with the real part of the refractive index of the laser-active material acting - dfb gratings on different wavelengths and adjusted via a modes correlation are optically coupled to one another, and at least two between the two dfb - laser - sections voting sections arranged for fine tuning of the clock frequency, of which a passive in the form of phases slide section and the other active in the form of damping - / gain section is formed, characterized in that the two dfb - grid for the unique, stable selection in each case exactly one mode per dfb - laser - section (dfb₁, Dfb₂) to a coupling modes pair also on the reinforcing profile, with the imaginary part of the refractive index of the laser-active material and thus the two dfb - laser - sections (dfb₁, Dfb₂) complex couplings (κ_complex1, κ_complex2) , and that the clock frequency (f_T) by the choice of the offset (os) as a function of the reinforcing profile of the laser-active material of the two dfb - laser - sections (dfb₁, Dfb₂) roughly in a large frequency range can be tuned, wherein..