5 results about "Yellow laser" patented technology

This invention discloses a microcrystalline composite glass fiber with zero thermal quenching of yellow light and its preparation method; the cladding of the microcrystalline composite glass fiber is quartz glass, and the core is SiO2 composite Dy 3+ Doped Gd3ScGa4O 12 Microcrystalline glass. The fabrication process of this optical fiber includes: first, acid washing and drying of a quartz glass tube, followed by sealing one end with a tapered end; then, adding Gd... 3‑x ScGa4O 12 : x Dy 3+ A ceramic core rod is placed inside a quartz glass tube to form an optical fiber preform. Finally, the preform is drawn into fibers at high temperature to obtain the microcrystalline composite glass fiber with zero thermal quenching of yellow light. The microcrystalline composite glass fiber prepared by this invention can maintain stable yellow light emission under high-temperature conditions, with no thermal attenuation in intensity and no significant shift in the emission center, and can be used for Dy... 3+ Doped yellow fiber lasers provide an efficient and stable gain medium, which is conducive to the miniaturization of devices and is expected to enable direct output of high-power yellow lasers.

This application relates to an intracavity frequency-doubled yellow laser device. An intracavity frequency-doubled laser device includes: a first and second mirror defining a resonant cavity; a gain medium for generating a first laser beam in response to an external pump beam received from outside the cavity; a nonlinear frequency-doubled optical element for generating a second laser beam in response to the first laser beam; a birefringent waveplate for controlling the phase properties of the first and second laser beams; and a fused silica element located at the exit of the resonant cavity. The second mirror is formed as a relatively thick film on the fused silica and is controlled to generate the output beam of the second laser beam with high precision. The four components within the resonant cavity are positioned back-to-back and fixed in place using optical adhesive (forming a compact, miniaturized laser device).

An intracavity frequency-doubling laser device includes a first mirror and a second mirror defining a resonance cavity, a gain media to produce a first lasing light in response to an external pump beam received from outside the cavity, a nonlinear frequency-doubling optical element to generate a second lasing light in response to the first lasing light, a birefringent waveplate to control phase properties of the first and second lasing lights, and a fused quartz element positioned at the exit of the resonance cavity. The second mirror is formed as a relatively thick film on the fused quartz and is controlled to create an output beam of the second lasing light with great accuracy. The four components within the resonance cavity are positioned back-to-back and held in place using an optical glue (forming a compact, miniaturized laser device).

The present invention discloses a low-threshold yellow light solid-state laser based on energy transfer, comprising a pump source, a focusing coupling system, and a resonant cavity; the resonant cavity comprises an input mirror and an output mirror arranged relatively in the resonant cavity, and a laser gain medium arranged between the input mirror and the output mirror, wherein the laser gain medium is Ce, Dy: LuGdAG transparent ceramic, and its chemical formula is (Gd 1‑x‑y‑z Lu x Dy y Ce z )3Al5O 12 , wherein 0.30≤x≤0.5, 0.03≤y≤0.3, 0.005≤z≤0.02, Ce, Dy: LuGdAG transparent ceramics are prepared by co-precipitation method. The present invention adopts Ce, Dy: LuGdAG transparent ceramics as laser gain medium, through Ce 3+ Co-doping, Dy 3+ The absorbed wavelength photon energy can be transferred to Ce 3+ , thereby increasing Ce 3+ 5d‑4f transition, Gd 3+ The doping of Gd improves the energy level loss between ions. 3+ The incorporation of ions with large radius makes the multi-ion-doped lattice more stable, ultimately achieving efficient yellow laser output.

The present invention relates to a single and / or dual laser delivery system attached to an existing ophthalmic operating microscope, comprising of a single and / or dual wavelength laser unit [1]; and a delivery system [5]. The laser unit [1] comprises of a green laser module 532 nm [3] and a yellow laser module 577 nm [4] along with an aiming beam [7] 635 nm. The delivery system comprises of a right-angle prism [5A]: X and Y Galvo assembly [5B] and a focusing lens assembly [5C]. The laser unit passes through a fiber optic cable [6] gets reflected using the right angle prism, gets deflected by the Galvo assembly, enters the focusing lens assembly and gets reflected by a folding mirror [5D] and focused on human eye capsule. The system converges and focuses the laser wavelengths in line with the aiming beam to create a circular pattern to accomplish a pre-measured Capsulorhexis.