Apparatuses and methods are disclosed for applying laser energy having desired pulse characteristics, including a sufficiently short duration and/or a sufficiently high energy for the photomechanical treatment of skin pigmentations and pigmented lesions, both naturally-occurring (e.g., birthmarks), as well as artificial (e.g., tattoos). The laser energy may be generated with an apparatus having a resonator with the capability of switching between a modelocked pulse operating mode and an amplification operating mode. The operating modes are carried out through the application of a time-dependent bias voltage, having waveforms as described herein, to an electro-optical device positioned along the optical axis of the resonator.

A dual-comb measuring system is provided. The dual comb measuring system may include a bi-directional mode-locked femtosecond laser, a high-speed rotation stage, and a fiber coupler. The high-speed rotation stage may be coupled to a pump diode.

A dual-comb measuring system is provided. The dual comb measuring system may include a bi-directional mode-locked femtosecond laser, a high-speed rotation stage, and a fiber coupler. The high-speed rotation stage may be coupled to a pump diode.

A pulse compressor includes a plurality of optical components. The plurality of optical components includes a diffraction grating. A first optical component of the optical components is fastened to base plate by at least first and second intermediate elements that are laser-welded to one another. The first intermediate element is fastened to the base plate and the second intermediate element is fastened to the optical component. A joining surface of the first and second intermediate elements is formed as a bearing recess and another joining surface is curved. At least the laser-welded joining surfaces of the first optical component, the base plate, and the first and second intermediate elements are formed from materials for which a difference in their coefficients of thermal expansion is less than 10e-6/K.

Apparatuses and methods are disclosed for applying laser energy having desired pulse characteristics, including a sufficiently short duration and/or a sufficiently high energy for the photomechanical treatment of skin pigmentations and pigmented lesions, both naturally-occurring (e.g., birthmarks), as well as artificial (e.g., tattoos). The laser energy may be generated with an apparatus having a resonator with the capability of switching between a modelocked pulse operating mode and an amplification operating mode. The operating modes are carried out through the application of a time-dependent bias voltage, having waveforms as described herein, to an electro-optical device positioned along the optical axis of the resonator.

The present application discloses a cavity dumped low repetition rate infrared tunable femtosecond laser source configured to produce pulses of 200 femtoseconds or less with a peak power of four megawatts or more for use in a variety of applications including multi-photon microscopy.

Approaches, apparatuses and methods for single photon sensitive, non-interferometric photonics vibrometry applications based on quantum parametric mode sorting, optical gating and single photon counting are disclosed. In one embodiment, a controller module includes a photon detection unit, a pulse generator unit, a time synchronization unit, a data acquisition and processing unit and a central controller unit. In the second embodiment, a probe module with beam raster scanning ability includes an optical transceiver unit based on a bidirectional monostatic coaxial arrangement using off-the-shelf optical components and an optical beam steering device.

Approaches, apparatuses and methods for single photon sensitive, non-interferometric photonics vibrometry applications based on quantum parametric mode sorting, optical gating and single photon counting are disclosed. In one embodiment, a controller module includes a photon detection unit, a pulse generator unit, a time synchronization unit, a data acquisition and processing unit and a central controller unit. In the second embodiment, a probe module with beam raster scanning ability includes an optical transceiver unit based on a bidirectional monostatic coaxial arrangement using off-the-shelf optical components and an optical beam steering device.

A tunable, modulated high-frequency light beam from a single source of coherent light. An ultra-short pulse of coherent light, having an optical spectrum, is derived from a single source. Spreading the optical spectrum of the ultra-short pulse of coherent light forms a spectrally spread optical pulse which is thereafter split into two or more spectrally spread optical pulses. At least one of the two or more spectrally spread optical pulses is delayed, such that, upon recombining the two or more spectrally spread optical pulses a tunable, modulated spectrally spread optical pulse is formed.

A tunable, modulated high-frequency light beam from a single source of coherent light. An ultra-short pulse of coherent light, having an optical spectrum, is derived from a single source. Spreading the optical spectrum of the ultra-short pulse of coherent light forms a spectrally spread optical pulse which is thereafter split into two or more spectrally spread optical pulses. At least one of the two or more spectrally spread optical pulses is delayed, such that, upon recombining the two or more spectrally spread optical pulses a tunable, modulated spectrally spread optical pulse is formed.