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Ultrashort pulse lasers constitute an important tool in the emerging field of optical frequency metrology and are enabling unprecedented measurement capabilities and new applications in a wide range of fields, including precision spectroscopy, atomic clocks, ultracold gases, and molecular fingerprinting. We demonstrate the generation of stable 127-fs self-similar pulses at a central wavelength of 1560 nm with 7.14-mW average output power. Similariton lasers have a low repetition rate deviation in the averaging time interval [Formula: see text], a low relative intensity noise [Formula: see text] (30 Hz to 10 kHz), a narrow single comb line width of 32 kHz, and high reliability. Thus, such lasers are highly promising for further development of the stabilized combs and open up a robust and substantially simplified route to synthesizing low-noise microwaves.

An exactly solvable scalar microscopic model describing a radiation field and its interaction to a matter degrees of freedom in one-dimensional inhomogeneous dielectric with dispersion is proposed. A consistent canonical quantization scheme for the model is developed. Two modes of quantum collective excitations of polariton type are found in the general case. The case of an interface between two semi-infinite media is considered explicitly.