Elbit Systems Electro-optics Elop Ltd.

Belkin Vision Ltd.

Tel Aviv University

Tag Dream Medical Ltd.

Belkin Laser Ltd.

Elop Electrooptical Industries Ltd.

Elop Electro-optics Industries Ltd.

Elbit Systems Electro-optical Elop Ltd.

Zachary Sacks

Ofer Gayer

Daria Lemann-Blumenthal

Hagay Sitry

Ran Weisman

Hagay Botansky

Ady Arie

Zeev Schiffer

Yuval Perets

Yaron Tal

Grigor Hovhannisyan

Yehuda Ben Ami

Dan Nabel

Dan Michael

Micha Zimmermann

Vladimir Krupkin

Itamar Shoshan

Elena Luria

Michael Belkin

Doron Chomsky

Doron David

Asaf Turm

Daniel Elkayam

Daniel Elyakam

Masha Dobkin-Bekman

Boaz Lissak

Dov Abramovich

Gil Porat

Israel Anschel

Arieh Kisos

Andrew Lovett

Doron Chomski

Yuval Yohai

Kuti Grossman

A system () includes a radiation source () and a controller (). The controller is configured to define a treatment zone () on a capsule () of an eye () of a subject (), and to form an opening () in the capsule, subsequently to defining the treatment zone, by irradiating multiple target regions () within the treatment zone in an iterative process that includes, during each one of multiple iterations of the process, acquiring an image () of at least part of the capsule, designating one of the target regions based on the acquired image, and causing the radiation source to irradiate the designated target region. Other embodiments are also described.

Automated capsulotomy

An apparatus includes an optical unit (), including a light source (), one or more beam-directing elements (), and a radiation source (). The radiation source is configured to irradiate an eye () of a patient () with one or more treatment beams () by emitting the treatment beams toward the beam-directing elements, while the eye fixates on the light source by virtue of the light source transmitting visible light (). The apparatus further includes an optical filter () configured to inhibit passage of the treatment beams, but not the visible light, therethrough, while interposing between the beam-directing elements and a pupil () of the eye. Other embodiments are also described.

Protection for direct selective laser trabeculoplasty

A system includes a radiation source and a controller. The controller is configured to designate, for irradiation, multiple target regions on an eye of a patient, and to perform an iterative process that includes, during each iteration of the process, acquiring an image of the eye, based on the image, calculating a location of a different respective one of the target regions, processing the image so as to identify any obstruction at the location, and provided no obstruction at the location is identified, causing the radiation source to irradiate the location. Other embodiments are also described.

Avoiding blood vessels during direct selective laser trabeculoplasty

A system includes a radiation source, one or more beam-directing elements, and a controller. The controller is configured to cause the radiation source to emit one or more aiming beams at the beam-directing elements such that the aiming beams are directed, by the beam-directing elements, toward an eye of a patient, to verify that each of the aiming beams is properly directed by the beam-directing elements, and, in response to verifying that each of the aiming beams is properly directed by the beam-directing elements, to treat the eye by causing the radiation source to irradiate one or more target regions of the eye with respective treatment beams. Other embodiments are also described.

Direct selective laser trabeculoplasty

A tool has a handle and an elongate shaft that extends distally from the handle. A distal portion of the shaft is inserted into a subject during a surgical procedure. An optical fiber delivers laser energy to a tip at the distal portion of the shaft. The tip includes a mechanical cutting mechanism including a moving part that absorbs the laser energy, thermally conducts the absorbed energy to tissue that is disposed between the moving part and another part, and moves with respect to the other part in order to cut tissue that is disposed between the parts using a mechanical force that is lower than a mechanical force that would be required to cut the tissue in the absence of the laser energy. Other embodiments are also described.

Hybrid laser cutter

A system () includes a radiation source () and a controller (), configured to display a live sequence of images of an eye () of a patient (), while displaying the sequence of images, cause the radiation source to irradiate the eye with one or more aiming beams (), which are visible in the images, subsequently to causing the radiation source to irradiate the eye with the aiming beams, receive a confirmation input from a user, and in response to receiving the confirmation input, treat the eye by causing the radiation source to irradiate respective target regions of the eye with a plurality of treatment beams. Other embodiments are also described.

The present invention provides an active fiber package for use in a fiber laser, amplifier, or ASE source comprising: a plate-shape base comprising a groove having a configuration of at least two spirals for receiving and fixedly holding an active fiber therein, said at least two spirals are coplanar enabling visibility of said active fiber, the outer loop of one spiral transitioning smoothly to the outer loop of another spiral, and the inner loop of each one of said spirals transitioning smoothly into a relatively short straight section; wherein a portion of said straight section of one of said spirals spliced to a coupling fiber, and wherein multiple inner loops of each one of said spirals in proximity to said straight section having a relatively low radius of curvature for enabling tight coiling of said active fiber, thus, for reducing thermal modal instability (TMI) and increasing lasing power.

Active fiber package

Depolarized fiber lasers and respective methods are provided for increasing the SBS (stimulated Brillouin scattering) threshold. The laser source is constructed by a frequency-broadened seed source having a frequency bandwidth of less than 50 GHz, and the depolarization of the seed source is carried out at time scales shorter than 10 ns. At least one amplifier is configured to receive and amplify radiation from the frequency-broadened seed source and deliver the amplified radiation in the optical fiber. Depolarization may be achieved in various ways (e.g., using an interferometer with added length to one arm) and is kept at time scales shorter than tens of nanoseconds, typically shorter than 5-10 ns, which distinguish it from random polarization having polarization changes at longer time scales. Polarization maintaining fibers may be used to further increase the SBS by separating the polarizations states.

Narrowband depolarized fiber lasers

Fiber lasers and methods are provided, in which the modal instability threshold is raised to provide more laser power. Fiber lasers comprise an active optical fiber having at least one absorption peak wavelength (&#x3bb;) and capable of supporting more than a fundamental mode during operation, and a plurality of pump diodes connected to deliver radiation emitted thereby into the optical fiber. At least one of the pump diodes is a wavelength-locked (WL) diode and at least one of the pump diodes is configured to deliver radiation at at least &#x3bb;&#x2260;&#x3bb;(not necessarily the same diode(s)). The pump diodes may comprise any of WL diode(s) at &#x3bb;&#x2260;&#x3bb;, WL diode(s) at &#x3bb;=&#x3bb;and non-WL diode(s). Pumping radiation off the fiber's absorption peak increases the modal instability threshold, most likely by reducing the temperature gradient in the active fiber at the fiber pump entrance point and along the fiber.

Modal instability control in fiber lasers

Systems and methods for modulating the output of a difference frequency generator such as an OPO, OPA or OPG include a pump fiber laser having at least one internal, directly modulatible component, wherein the pump fiber laser produces a pump signal, and a difference frequency generator coupled to the pump fiber laser. The difference frequency generator is configured for accepting the pump signal of the pump fiber laser and producing an output signal, wherein parameters of the output signal are determined based on direct modulation of the internal, directly modulatible component of the pump fiber laser.

Modulation of fiber laser pumped difference frequency generator

A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second fiber which is a double clad fiber, and a bulk optic component positioned between the first and second fibers. At least one mode stripper is positioned between the first fiber entry port and the second fiber exit port providing for limiting and removal of propagating clad light.

Fiber lasers

A system and method for improving conversion efficiency of a difference frequency generator (DFG) and/or for outputting a desired shape of the output signal, where the method includes providing a pump source, modifying the pump pulse temporal shape for optimal DFG conversion efficiency, and providing the modified pump pulse to the DFG. The pump source may be, for example, a MOPA laser or a diode or any other suitable source. In one embodiment, the pump pulse shape is modified such that an initial gain within the DFG is high, followed by a lower level signal for efficient conversion within the DFG. An example of such a shape is a double square pulse. Other configurations are possible as well such as a single rectangular pulse shape.

System and method for controlling optical output of a frequency conversion device

A cA crystal configured to change a frequency of a laser through an optical parametric oscillation (OPO) process and a difference frequency generation (DFG) process is provided. The crystal includes: an OPO-DFG segment that is quasi-periodically poled to yield (i) a conversion of a laser pump light applied thereto, to a first signal and an idler, and (ii) a conversion of a first signal applied thereto, to a second signal and to the idler, by phase-matching a difference frequency generation (DFG) process and an OPO process therein simultaneously, wherein the laser pump light has a frequency that equals a sum of a frequency of the first signal and a frequency of the idler and wherein the frequency of the first signal equals a sum of a frequency of the second signal and the frequency of the idler.

Method and system for optical conversion

Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction. A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second double clad fiber, and a bulk optic component positioned between the first and second fibers. A mode stripper included within the second fiber allows for removal of high power light which is propagated through the outer clad rather than launched into the core of the second fiber.

Growing community of inventors

Modiin, Israel

Zachary Sacks