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Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 8102886 | Integrated curved grating based semiconductor laser A wavelength tunable laser which includes a first mirror, a diffraction grating to diffract a laser beam into a plurality of diffracted laser beams, at least one feedback waveguide, at least one second mirror. Each feedback waveguide precedes one of the second mirro... | 01/24/2012 |
| 8098697 | Optical device for addressing a slave cavity with a wide-band laser source The invention concerns an optical device comprising an optical source for emitting a light beam in a plurality of emitting wavelengths and at least one laser, each of said at least one laser including a holographic medium (MH), means for injecting (FO, MCS, MUX, CO,... | 01/17/2012 |
| 8085822 | Tunable mode-locked laser A tunable laser cavity for selectively emitting laser light having a first wavelength and a second wavelength using pump light emitted by a pump light source. The tunable laser cavity includes an optical resonator, the optical resonator having a configuration, optic... | 12/27/2011 |
| 8073021 | Methods for obtaining stabilized output beams from frequency converted light sources and frequency converted light sources utilizing the same A method for operating a frequency converted light source includes sweeping a wavelength control signal of a semiconductor laser over an initial signal range and measuring an optical power of an output beam emitted from a wavelength conversion device coupled to the ... | 12/06/2011 |
| 8073020 | Wavelength tuning apparatus and method thereof A wavelength tuning apparatus and method that maintain highest efficiency with a single angle manipulation without changing a position of input/output light. For this, the wavelength tuning apparatus and method include a transmission-type diffraction grating and a m... | 12/06/2011 |
| 8068521 | Laser source that generates a plurality of alternative wavelength output beams A laser source (10) for emitting a set of sequential, different wavelength output beams (12) includes a gain medium (16), a feedback assembly (26) and a control system (30). The gain medium (16) includes a first facet (16... | 11/29/2011 |
| 8064490 | Optical resonator and tunable laser An optical resonator has a Y-branched waveguide including first, second, and third optical waveguides interconnected at a single point. The first optical waveguide leads toward a reflector. The second and third optical waveguides are optically interconnected by a cu... | 11/22/2011 |
| 8045594 | Surface-emitting external cavity laser device A surface-emitting extended cavity laser with intracavity frequency conversion is provided with at least one surface-emitting laser element with multiple layers to obtain laser light at a fundamental frequency, reflector means, spaced from the laser element to form ... | 10/25/2011 |
| 8045593 | Method of controlling a frequency-converted laser source comprising an external optical feedback component A method of controlling a frequency-converted laser source is provided where the laser source comprises a laser cavity, an external optical feedback component, a wavelength selective component, and a wavelength conversion device and the method comprises driving a ga... | 10/25/2011 |
| 8040928 | Semiconductor laser, method for generating laser beam and method for reducing a spectral line-width of laser beam A semiconductor laser is provided capable of generating very narrow laser beams and having stable characteristics, a method for generating the laser beams and a method for reducing a spectral line-width of the laser beams. The semiconductor laser includes a semicond... | 10/18/2011 |
| 8005123 | Wavelength tunable laser A wavelength tunable laser includes a first facet including a high reflection coating film; a gain region disposed adjacent to the first facet, the gain region including two or more light emitting devices that are arranged parallel to one another; an optical wavelen... | 08/23/2011 |
| 7995626 | Athermal external cavity laser Provided is an athermal external cavity laser (ECL), whose output optical power and output wavelength can be kept regular irrespective of temperature changes without using additional temperature controlling components. The ECL comprises: a semiconductor amplifier; a... | 08/09/2011 |
| 7995627 | Process and apparatus for a wavelength tuning source An apparatus and source arrangement for filtering an electromagnetic radiation can be provided which may include at least one spectral separating arrangement configured to physically separate one or more components of the electromagnetic radiation based on a frequen... | 08/09/2011 |
| 7991024 | External cavity wavelength tunable laser device and optical output module In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7)... | 08/02/2011 |
| 7991025 | Tunable lasers locked to whispering gallery mode resonators Techniques and devices that stabilize a laser to a whispering gallery mode optical resonator. ... | 08/02/2011 |
| 7983314 | Polarization stable lasers Techniques, devices and applications of polarization stable lasers to provide laser operations against changes, variations or fluctuations in optical polarization in a laser cavity. ... | 07/19/2011 |
| 7978737 | Laser device, control device of laser device, method of controlling laser device, method of tuning wavelength of laser device and control data of laser device A laser device includes a cavity and a control portion. The cavity has an optical amplifier, a wavelength selectable portion having a changeable transmission wavelength range, and a mirror. The control portion controls the wavelength selectable portion so that the t... | 07/12/2011 |
| 7970025 | System and method for tuning adjusting the central frequency of a laser while maintaining frequency stabilization to an external reference A method and system for stabilizing a laser to a frequency reference with an adjustable offset. The method locks a sideband signal generated by passing an incoming laser beam through the phase modulator to a frequency reference, and adjusts a carrier frequency relat... | 06/28/2011 |
| 7970024 | Tunable diode laser system with external resonator A tunable diode laser system with external resonator in Littrow or Littman configuration has an optical lattice on which the light beam from a laser diode is diffracted, a support element to hold the lattice or to hold a mirror, which reflects the light diffracted b... | 06/28/2011 |
| 7949019 | Wavelength tuning source based on a rotatable reflector An apparatus and source arrangement for filtering an electromagnetic radiation can be provided which may include at least one spectral separating arrangement configured to physically separate one or more components of the electromagnetic radiation based on a frequen... | 05/24/2011 |
| 7949020 | Semiconductor laser and optical integrated semiconductor device A tunable distributed feedback semiconductor laser includes a substrate; an optical waveguide structure disposed on a main surface of the substrate and including an active layer and a diffraction grating, the optical waveguide structure being divided into a first DF... | 05/24/2011 |
| 7940819 | Tunable laser module, tunable laser apparatus and controlling method for tunable laser A tunable laser module includes a tunable laser section including a gain medium and a wavelength filter having a periodic characteristic which brings about a discontinuous variation of an oscillation wavelength, and a monitoring section adapted to output a monitorin... | 05/10/2011 |
| 7929581 | Testing method of wavelength-tunable laser, controlling method of wavelength-tunable laser and laser device A testing method of a wavelength-tunable laser having a resonator including wavelength selection portions having wavelength property different from each other includes a first step of controlling the wavelength-tunable laser so as to oscillate at a given wavelength ... | 04/19/2011 |
| 7929582 | Systems and methods for generating a tunable laser beam Systems and methods of generating a tunable laser beam are disclosed. An example method includes: generating coherent optical beams from a plurality of semiconductor optical amplifiers (SOAs); combining the coherent optical beams into a combined coherent optical bea... | 04/19/2011 |
| 7924893 | Method and system for switching of tunable lasers The invention provides a method and laser system for switching from a current operating point to a new operating point of the laser, the laser operating at a particular wavelength and includes a source channel and destination channel. The system switches and locks t... | 04/12/2011 |
| 7916763 | Current driven frequency-stepped radiation source and methods thereof A wavelength tunable system including: a laser having a lasing cavity and an external cavity; a frequency-adjuster in the external cavity; and an adjustable current source to adjust the laser diode current, and a method of use as defined herein. ... | 03/29/2011 |
| 7903700 | Narrow-spectrum laser device A spectral purity range (E95) of a laser beam output from an amplifying laser device (300) is measured by spectral purity range measuring means. To have the measured spectral purity range (E95) within an allowable range E950±dE95 of a target spectral purity ... | 03/08/2011 |
| 7876795 | Semiconductor light source with electrically tunable emission wavelength A semiconductor light source comprises a substrate, lower and upper claddings, a waveguide region with imbedded active area, and electrical contacts to provide voltage necessary for the wavelength tuning. The active region includes single or several heterojunction p... | 01/25/2011 |
| 7873081 | Compact and high performance wavelength tunable laser A tunable laser cavity utilizes a dispersion compensated acousto-optic tunable filter. The wavelength accuracy and stability is achieved by a wavelength locker utilizing two separate intracavity light beams without the need to use beam splitters to significantly red... | 01/18/2011 |
| 7873082 | Semiconductor integrated device A semiconductor integrated device includes a plurality of wavelength tunable lasers, provided on a semiconductor substrate, and having oscillation wavelength ranges different from each other. Each of the wavelength tunable lasers includes an optical waveguide includ... | 01/18/2011 |
| 7869471 | Tunable OPO laser A tunable OPO laser is provided. The laser includes an OPO cavity containing an OPO nonlinear crystal for generating a plurality of preselected wavelength beams of different wavelengths. The OPO cavity is formed between a first OPO reflective surface and a second OP... | 01/11/2011 |
| 7869472 | Optical locking based on optical resonators with high quality factors Techniques and devices for providing optical locking of optical resonators and lasers. ... | 01/11/2011 |
| 7864822 | Process and apparatus for a wavelength tuning source An apparatus and source arrangement for filtering an electromagnetic radiation can be provided which may include at least one spectral separating arrangement configured to physically separate one or more components of the electromagnetic radiation based on a frequen... | 01/04/2011 |
| 7843977 | Light source that utilizes small footprint reference gas cells for multiple laser frequency stabilization A light source and the method for operating the same are disclosed. The light source includes first and second lasers, and first and second wavelength control assemblies. The lasers emit first and second light beams, respectively, at wavelengths that are determined ... | 11/30/2010 |
| 7843976 | Compact multimode laser with rapid wavelength scanning In accordance with the present invention, a compact laser system with nearly continuous wavelength scanning is presented. In some embodiments, the compact laser system can be scanned over a broad range. In some embodiments, the compact laser system can be scanned at... | 11/30/2010 |
| 7830926 | Tunable device, method of manufacture, and method of tuning a laser This description relates to an apparatus, a method of manufacturing, and a method of tuning optical and/or electrical parameters of semiconductor devices and materials, thin film materials, or other devices. In one example, a laser is tuned to produce an adjustable ... | 11/09/2010 |
| 7830927 | Bragg grating reflection strength control A tunable laser comprises a gain section and two or more reflectors. At least one of the reflectors is a Bragg grating comprising a reduced strength section comprising a base order periodic pattern of marks and spaces from at which at least some of the marks or spac... | 11/09/2010 |
| 7826501 | Tunable laser A mode hop-free tunable laser including a gain medium, a microfabricated blazed grating, defining an external cavity of a given length, the blazed grating lying in a general plane and including a plurality of elongate beams carrying mutually parallel respective refl... | 11/02/2010 |
| 7822082 | Wavelength reconfigurable laser transmitter tuned via the resonance passbands of a tunable microresonator The present invention relates to a laser transmitter capable of being configured to transmit one of a plurality of wavelengths. Specifically, the laser transmitter may be reconfigured using the resonance passbands of a tunable microresonator coupled with a fixed gra... | 10/26/2010 |
| 7822081 | Resonator This invention relates to a wavelength tunable light source, comprising a main resonator, having a first and a second mirrored end, defining an effective cavity length, i.e. an optical beam path length of a resonant mode of the cavity, an optical gain element, havin... | 10/26/2010 |
