A laser structure including a Si or Ge substrate, a III-V buffer layer formed on the substrate, a light emitting diode (LED) formed on the buffer layer configured to produce visible light, a lens disposed on the LED to focus light from the LED, a photonic crystal layer formed on the LED to receive the light focused by the lens, and a monolayer semiconductor nanocavity laser formed on the photonic crystal layer for receiving light through the photonic crystal layer from the LED. The LED and the laser are formed monolithically and the LED acts as an optical pump for the laser.

A laser structure including a Si or Ge substrate, a III-V buffer layer formed on the substrate, a light emitting diode (LED) formed on the buffer layer configured to produce visible light, a lens disposed on the LED to focus light from the LED, a photonic crystal layer formed on the LED to receive the light focused by the lens, and a monolayer semiconductor nanocavity laser formed on the photonic crystal layer for receiving light through the photonic crystal layer from the LED. The LED and the laser are formed monolithically and the LED acts as an optical pump for the laser.

The present invention relates to the supply of a sensor of an interventional device. In order to provide an interventional device with improved handling, an interventional device is provided, the device comprising a longitudinal elongated main body with a distal portion and a proximal portion; and a sensor provided on the distal portion. The elongated main body comprises a hollow shaft. The proximal portion of the main body comprises an optical energy generation section, in which the hollow shaft is at least partially provided as a transparent hypotube, and in which a doped material is provided inside the hollow shaft. Further, the doped material is configured to generate light as stimulated emission with a predetermined wavelength upon the doped material being radiated with a pumping wavelength. Still further, the transparent hypotube is configured to receive light from an external light source as a substantially transversal light input providing the pumping wavelength to the doped material. The main body further comprises a light guiding section that comprises an optical fiber arrangement inside the hollow shaft extending from the optical energy generation section toward the sensor for transmitting energy to the sensor.

Disclosed is a light amplifier device comprising a light source emitting a first light; a first lens unit formed under the light source to collect the first light in an opposite direction from the light source; a first filter unit formed under the first lens unit to remove a noise of the first light; an amplifier unit receiving the first light to induce surface plasmon effect and generate second light which is an amplified light; a second filter unit consisted to remove a noise of the second light; and a measurement unit formed in a traveling direction of the second light transmitted through the second lens unit to measure intensity of the second light.

Disclosed is a light amplifier device comprising a light source emitting a first light; a first lens unit formed under the light source to collect the first light in an opposite direction from the light source; a first filter unit formed under the first lens unit to remove a noise of the first light; an amplifier unit receiving the first light to induce surface plasmon effect and generate second light which is an amplified light; a second filter unit consisted to remove a noise of the second light; and a measurement unit formed in a traveling direction of the second light transmitted through the second lens unit to measure intensity of the second light.

The techniques described herein relate to a laser system, including: a plurality of fiber laser amplifiers; a beam combiner configured to combine laser light outputs from the plurality of fiber laser amplifiers; an optical delivery fiber configured to receive the combined output from the plurality of laser amplifiers into the delivery fiber and configured to deliver the combined output to a target; one or more diode lasers configured for providing optical pump pulses to the plurality of fiber laser amplifiers, wherein the laser light outputs from the plurality of fiber laser amplifiers are generated in response to the provided optical pump pulses.

The techniques described herein relate to a laser system, including: a plurality of fiber laser amplifiers; a beam combiner configured to combine laser light outputs from the plurality of fiber laser amplifiers; an optical delivery fiber configured to receive the combined output from the plurality of laser amplifiers into the delivery fiber and configured to deliver the combined output to a target; one or more diode lasers configured for providing optical pump pulses to the plurality of fiber laser amplifiers, wherein the laser light outputs from the plurality of fiber laser amplifiers are generated in response to the provided optical pump pulses.

A light source for Raman amplification to Raman-amplify signal light includes: plural incoherent light sources that output incoherent light; plural pumping light sources that output second-order pumping light; an optical fiber for Raman amplification to Raman-amplify the incoherent light with the second-order pumping light, and outputs the amplified incoherent light; and an output unit connected to the optical transmission fiber, receiving the amplified incoherent light, and outputting the amplified incoherent light as first-order pumping light having a wavelength that Raman-amplifies the signal light to the optical transmission fiber.

A light source for Raman amplification to Raman-amplify signal light includes: plural incoherent light sources that output incoherent light; plural pumping light sources that output second-order pumping light; an optical fiber for Raman amplification to Raman-amplify the incoherent light with the second-order pumping light, and outputs the amplified incoherent light; and an output unit connected to the optical transmission fiber, receiving the amplified incoherent light, and outputting the amplified incoherent light as first-order pumping light having a wavelength that Raman-amplifies the signal light to the optical transmission fiber.

A light source for Raman amplification to Raman-amplify signal light includes: plural incoherent light sources that output incoherent light; plural pumping light sources that output second-order pumping light; an optical fiber for Raman amplification to Raman-amplify the incoherent light with the second-order pumping light, and outputs the amplified incoherent light; and an output unit connected to the optical transmission fiber, receiving the amplified incoherent light, and outputting the amplified incoherent light as first-order pumping light having a wavelength that Raman-amplifies the signal light to the optical transmission fiber.