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Coherent Light Generators > Raman Laser

Raman Laser

Raman Laser patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

09/18/14 - 20140269786 - Continuously variable pulse-width, high-speed laser
A laser comprises a master oscillator, a modulator, a controller, and an amplifier. The master oscillator has an optical cavity and provides a signal, which may be continuous or pulsed. The modulator resides outside of the optical cavity, receives the signal, and modulates the signal to create a new train...

09/18/14 - 20140269787 - Wavelength versatile vecsel raman laser
A tunable lasing device including a vertical external cavity surface emitting laser, adapted to generate a fundamental laser beam in response to pumping from a pump source, said fundamental laser beam having a fundamental wavelength and a fundamental linewidth; a fundamental resonator cavity adapted to resonate the fundamental beam therein;...

09/11/14 - 20140254614 - Cascaded raman lasing system
In a Raman system, a primary laser source emits laser light at an initial wavelength, and a seed source emits a multi-wavelength seed laser light. The seed wavelengths correspond to a respective Stokes orders of the primary laser light. The primary laser light and the seed laser light are combined...

04/24/14 - 20140112357 - Raman distributed feedback fiber laser and high power laser system using the same
A Raman distributed feedback (DFB) fiber laser is disclosed. It includes a pump source and a Raman gain fiber of a length smaller than 20 cm containing a distributed feedback (DFB) grating with a discrete phase structure located within no more than 10% off the center of the grating and...

01/23/14 - 20140023098 - Optical fiber lasers
A fiber gain medium provided by a rare-earth doped fiber (10) is contained in a first resonant cavity by end reflectors (12, 18). The reflector (12) is wavelength selective to limit the frequency band of the first resonant cavity. The first resonant cavity also contains a second resonant enhancement cavity...

01/16/14 - 20140016655 - Reducing the spectral bandwidth of lasers
A laser system for semiconductor inspection includes a fiber-based fundamental light source for generating fundamental light that is then converted/mixed by a frequency conversion module to generate UV-DUV laser light. The fundamental light source includes a nonlinear chirp element (e.g., a Bragg grating or an electro-optic modulator) that adds a...

12/12/13 - 20130329755 - Green and red despeckling
An apparatus and method for despeckling that includes a pulsed green laser, a green laser diode assembly, and stimulated Raman scattering light formed in an optical fiber. The stimulated Raman scattering light is divided into green light and red light. The green light from the stimulated Raman scattering is combined...

08/22/13 - 20130215912 - Multi-media raman resonators and related system and method
A system includes a laser configured to generate a pump beam at a pump wavelength. The system also includes a multi-media Raman resonator configured to receive the pump beam and generate an output beam. The multi-media Raman resonator includes multiple mirrors and multiple Raman media optically located between the minors....

07/18/13 - 20130182724 - Optical parametric amplification, optical parametric generation, and optical pumping in optical fibers systems
Embodiments described herein include a system for producing ultrashort tunable pulses based on ultra broadband OPA or OPG in nonlinear materials. The system parameters such as the nonlinear material, pump wavelengths, quasi-phase matching periods, and temperatures can be selected to utilize the intrinsic dispersion relations for such material to produce...

12/13/12 - 20120314722 - Raman converting laser systems
In one embodiment, the instant invention provides a method that includes: outputting a first laser beam having: a beam quality factor (M2) between 1 and 5, and a spectral width of less than 0.15 nm, where the outputting is performed by a laser generating component that includes a alexandrite laser...

11/01/12 - 20120275474 - Laser device
A laser apparatus for producing mode locked pulses includes a closed optical system adapted to connect to a fibre grain medium to form a laser cavity. The fibre gain medium is adapted to receive pulses characterized by a first state and to output pulses characterized by a second state. The...

10/18/12 - 20120263196 - Ultrafast raman laser systems and methods of operation
A Raman laser system, the system comprising a resonator cavity comprising a plurality of reflectors, wherein at least one reflector is an output reflector adapted for outputting a pulsed output beam from the resonator cavity at a frequency corresponding to a Raman shifted frequency of the pump beam, wherein the...

09/20/12 - 20120236881 - Pulsed fiber laser
A method and a laser system for generating a pulsed laser signal with a laser signal wavelength and a laser signal repetition rate, the laser system includes a fiber laser unit includes a cladding pumped fiber laser includes a fiber laser light guiding region surrounded by a pump cladding, the...

06/14/12 - 20120147906 - Laser cooling of modified soi wafer
A laser cooling system includes a substrate, an REO layer of single crystal rare earth oxide including at least one rare earth element positioned on the surface of the substrate, and an active layer of single crystal semiconductor material positioned on the REO layer to form a semiconductor-on-insulator (SOI) device....

05/10/12 - 20120113994 - Low noise raman laser device, raman laser system and associated method
a Raman medium (3) exhibiting at least one Stokes shift ΔυR, such as to convert the emission at the excitation wavelength λS into a continuous emission at a Raman wavelength λR. The amplifying medium and the Raman medium belong to a Raman cavity resonant at the excitation wavelength λS and...

11/24/11 - 20110286474 - Fiber laser device
The fiber laser device includes: a laser oscillator 10 configured to emit laser light having a first wavelength; a first optical filter 20 configured to transmit the laser light having the first wavelength; a wavelength converter 30 configured to generate laser light having a second wavelength using stimulated Raman scattering...

11/17/11 - 20110280262 - Modular, high energy, widely-tunable ultrafast fiber source
A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Modularity is ensured by the implementation of interchangeable amplifier components. System compactness is ensured by employing efficient fiber amplifiers, directly or indirectly pumped by diode lasers. Peak power handling...

11/03/11 - 20110268140 - Multiple wavelength raman laser
A pulsed laser system may include a Raman fiber that is configured to act as multiple wavelength Raman laser. The fiber is configured to receive a pulsed input beam from an input source and convert the input beam to an output beam having narrow band outputs at first and second...

10/13/11 - 20110249689 - Devices, systems, and methods providing micro-ring and/or micro-racetrack resonator
Provided herein are certain embodiments of systems, methods and devices for Raman lasers based on micro-ring and mircro-racetrack resonators, and the manufacturing thereof. For example, a device can be provided which is structured to receive an electro-magnetic radiation including a resonator arrangement which has a distance from one edge thereof...

07/21/11 - 20110176563 - Cvd single crystal diamond material
Single crystal diamond material produced using chemical vapour deposition (CVD), and particularly diamond material having properties suitable for use in optical applications such as lasers, is disclosed. In particular, a CVD single crystal diamond material having preferred characteristics of longest linear internal dimension, birefringence and absorption coefficient, when measured at...

07/14/11 - 20110170563 - Apparatus and method for enabling quantum-defect-limited conversion efficiency in cladding-pumped raman fiber lasers
Cladding-pumped Raman fiber lasers and amplifiers provide high-efficiency conversion efficiency at high brightness enhancement. Differential loss is applied to both single-pass configurations appropriate for pulsed amplification and laser oscillator configurations applied to high average power cw source generation....

12/30/10 - 20100329287 - Method and device for stabilizing the spectrum of a pulsed coherent optical source
The invention relates to a method for stabilizing the spectrum of a pulsed coherent optical source that comprises controlling the offset frequency ω0 and the repetition rate ωr in order to stabilize the frequencies of the comb lines constituting the optical spectrum thereof. The method comprises forming, from the pulsed...

10/21/10 - 20100265971 - Cascade raman laser
The invention provides a cascade Raman laser including a pumping laser light source that generates pumping light, a cascade Raman resonator having an input-side optical reflector that receives the pumping light and selectively reflects light of each wavelength corresponding to a n-th Stokes ray (n is an integer more than...

04/29/10 - 20100103957 - Fractional raman order pumping in optical communication systems
An optical communication system includes a gain medium that receives optical signal(s) of one or more optical signal wavelengths. The system also includes pump source(s) that are capable of generating at least a first pump signal and a second pump signal. The first pump signal includes at least one integer...

04/22/10 - 20100098112 - Method and apparatus for preventing distortion of powerful fiber-laser systems by backreflected signals
A powerful fiber laser system is configured with at least one filtering element capable of preventing a backreflected Raman component of the main signal from propagating along the upstream stretch of the system. The filtering element includes a slanted fiber grating, one or more cladding formations disposed in a cladding...

03/04/10 - 20100054284 - Continuous-wave laser
A continuous wave Raman laser for producing visible laser output comprising: a resonator cavity; at least a first reflector and a second reflector said first and second reflectors being located at opposite ends of the resonator cavity; a laser gain medium located in the resonator cavity for generating a continuous...

12/31/09 - 20090323732 - Optical wave generator
An optical wave generator comprising a first-level Raman sideband generator (RSBG). The first-level RSBG comprises a first hollow-core photonic crystal fibre HCPCF (203) arranged to be filled with a Raman active gas and a first two-pump continuous wave (CW) laser source (200) having a first pump laser beam (201) at...

12/03/09 - 20090296743 - Mid-infrared fiber laser using cascaded raman wavelength shifting
A mid-infrared system for optical probing is disclosed that comprises a mid-infrared fiber laser based on cascaded Raman wavelength shifting, a sample volume, and a detector or detection system. The cascaded Raman wavelength shifting process in optical fibers involves the emission of a plurality of optical phonons for at least...

11/05/09 - 20090274175 - Fiber laser
This fiber laser is provided with: a signal light source that outputs a signal light; a rare earth-doped fiber that amplifies and outputs the signal light from the signal light source; a Raman amplifying fiber that is routed as a portion of an optical transmission path in order to output...

04/09/09 - 20090092156 - Devices and methods for providing stimulated raman lasing
Devices and methods for providing stimulated Raman lasing are provided. In some embodiments, devices include a photonic crystal that includes a layer of silicon having a lattice of holes and a linear defect that forms a waveguide configured to receive pump light and output Stokes light through Raman scattering, wherein...

02/05/09 - 20090034561 - Backward stimulated rayleigh-bragg scattering devices based on multi-photon absorbing materials and their applications
The present invention relates to a method and system of generating backward stimulated Rayleigh-Bragg scattering by focusing activating radiation through a multi-photon absorbing dye solution, thereby producing coherent output radiation with no measured frequency shift and measured pump threshold values independent of the spectral line width of the input activating...