摘要:
In an optical fiber device having a configuration in which an optical fiber is joined to a side surface of another optical fiber, a joint portion is suppressed from reaching a high temperature. The optical fiber device includes a first fluoride fiber, a second fluoride fiber, and a heat dissipation member. The first fluoride fiber guides light. The second fluoride fiber has a first end on or from which light is incident or output and a second end at which an end surface of the second fluoride fiber is obliquely joined to a side surface of the first fluoride fiber.
摘要:
The present invention concerns an optical molecular sensing device and related method. The optical molecular sensing device has an optical resonator adapted to be connected to an excitation source. The excitation source may be a laser operating at a 2.7-2.8 um spectral range. The optical molecular sensing device has an emission spectrum comprised of a plurality wavelengths. Also included are a detection unit and a RF frequency counter to detect at least one RF beat note resulting from detecting the emission spectrum of the optical resonator. A change in frequency of the RF beat note indicates the presence of a target molecule.
摘要:
The present invention relates to a Q-switching-induced gain-switched erbium pulse laser system, capable of generating erbium laser pulses within the 2.5 μm to 3.0 μm wavelength region, by means of Q-switching operation at 1.6 μm. At first, an Er3+-doped gain medium is pumped and Q-switched at the wavelength region from 1.58 μm to 1.62 μm, so that a Q-switched pulse is formed from the Er3+-doped gain medium. The Q-switched pulse results in an instant positive population inversion between the levels 4I11/2 and 4I13/2 of the Er3+-doped gain medium, followed by a gain-switched laser pulse at the wavelength region from 2.5 μm to 3.0 μm.
摘要:
A CW fiber-laser includes a gain fiber having a reflector proximity-coupled to one end, with the other end left uncoated. A laser resonator is defined by the reflector and the uncoated end of the gain-fiber. Pump-radiation from two fast-axis diode-laser bar stacks is combined and focused into the uncoated end of the gain-fiber for energizing the fiber. Laser radiation resulting from the energizing is delivered from the uncoated end of the gain-fiber and separated from the pump-radiation by a dichroic minor.
摘要:
An all-fiber device platform for producing high-power ROGB or RGB laser output comprises an optical fiber including multiple waveguide gain regions embedded within a common inner cladding and within an outer cladding, an optical cavity defined by dielectric reflectors and/or FBG mirrors, and a pump source for exciting one or more active ionic species by one or multiple pump wavelengths from one or both ends of the optical fiber through upconversion process. An apparatus for producing sequential or simultaneous multiple wavelength laser operation provides for applications of color projection displays and biomedical or other instrumentation.
摘要:
An optical amplification system has an active fibre section having an optical fibre 10 and containment means 8, 12 containing light of a specific wavelength within the active fibre section. The specific wavelength of light is the result of the spontaneous transition of photons. The contained photons stimulate further photons emissions, which depopulates energy levels involved in the amplification process.
摘要:
An improved highly doped waveguide is provided which comprises a waveguide employing an Er dopant and Pr sensitizer ions. The present invention also provides a method of efficient coupling from an optical source into a waveguide using a rotated optical element.
摘要:
An apparatus, composition, and method for producing an optical gain. The apparatus includes: an optical fiber having a core and a multiple cladding, the core being doped with Yb3+; a light source producing light at a wavelength in a range of from about 0.8 to about 1.06 microns to energize the yb3+ to produce laser action; and wherein the core is essentially devoid of Nd3+.
摘要:
An optical fiber amplifier is formed from glass doped with praseodymium. The glass may include one or more of cadmium mixed halide, hafnium halides, geranium and silicon disulphide based vitreous materials or fluorozirconate glass fibers. It is possible to provide an optical fiber amplifier which operates at a 1300 nm window for passive optical networks
摘要:
An optical material comprises a host matrix (e.g. fluorozirconate glass such as ZBLANP) doped with an optical atom pair or ion pair, each pair comprising a sensitizer (e.g. Nd.sup.3+) and an activator (e.g. Pr.sup.3+). The sensitizer is capable of absorbing optical excitation energy of a single wavelength (e.g. in the 800 nm region of GaAlAs diode laser) and transferring this optical excitation energy to the activator. This causes emission of visible and/or infrared light when the activator relaxes back into any of its lower energy states. Optical devices containing the optical material, and methods for generating visible and/or infrared light involving the optical material are also disclosed.