Elop Electro-optics Industries Ltd.

Elbit Systems Electro-optics Elop Ltd.

Elop Electrooptical Industries Ltd.

Itamar Shoshan

Vladimir Krupkin

Elena Luria

Zachary Sacks

Alexander Zak

Moshe Sarid

Avishay Yaniv

Alla German

Avigdor Zajdman

Israel Anschel

Andrew Lovett

Doron Chomski

Zeev Schiffer

Kuti Grossman

Doron David

Shlomo Gilead

Gad Rawnitzki

A novel laser obstacle warning and ranging system, for detecting hard-to-see long and thin obstacles in particular, comprises a fiber laser including a signal diode, a circulator, an erbium doped fiber, a wavelength division multiplexer, a narrow band reflector, a first fiber pump diode, an input combiner, an erbium-ytterbium co-doped fiber, a second fiber pump diode, an output combiner and a third fiber pump diode.

Laser obstacle ranging and display

A DIRCM (Direct IR Counter Measures) system includes a detection and warning apparatus for detecting a missile that might pose a threat on the platform to which said system is allocated, and for generating a warning of its existence. The warning may include data that enable the calculation of the expected direction from which the missile is approaching. The DIRCM system may also include an acquisition device for performing acquisition of the approaching missile in accordance with the data provided by the detection and warning apparatus, and issuing data that may enable the calculation in real time of the updated position of the missile, a fiber laser for generating a laser beam, and a motion and aiming enabled turret, coupled with the laser, for directing the laser beam onto the approaching missile. The laser beam may be generated in accordance with the missile's updated position as calculated based on data received from the acquisition device, and processing means, linked to the detection and warning apparatus and also to the acquisition device, the laser and the turret.

Fiber laser based directional infrared countermeasure (DIRCM) system

The invention provides a circuit arrangement for igniting gas discharge flash tubes including a gas discharge flash tube having two-spaced-apart electrodes, a pulse forming network and a voltage generator for supplying ignition pulses and tube burning pulses during simmer mode, the arrangement having a resonant circuit connected in circuit between the electrodes and the voltage generator, wherein the voltage generator provides the resonant circuit with AC high frequency voltage for producing gradually increasing amplitudes of an AC voltage until ignition voltage is achieved and for supplying AC voltage of a lower level in comparison to the level of the ignition voltage, for sustaining the burning of the tube during the simmer mode.

Circuit arrangement for igniting gas discharge flash tubes

The invention relates to means for generating a laser beam with an essentially constant angle of divergence over a wide range of operating conditions. The invention further relates to a method of generating such laser beam. The oscillator-amplifier laser system of the invention comprieses in combination an optical resonator, a first active medium and first optical means located within said resonator for generating an oscillator beam; a second active medium for amplifying said oscillator beam and a second optical means external to said resonator. Said first and second optical means have each, according to the invention, a predetermined optical power which maintains a constant divergence-angle of the output beam, even under variations in the induced optical power of the active media. Thus, there is provided an oscillator-amplifier laser system provided with optical means resulting in a beam having an essentially constant divergence angle over a wide range of operating conditions, and particularly over a wide range of repetition rates.

Laser system

A low divergence laser oscillator of the kind wherein an intra-cavity oscillator beam is propagated along a resonator axis and within a portion of the volume of the active medium and wherein a part of the intra-cavity oscillator beam intensity is coupled out of the oscillator by a first outcoupler as an extra-cavity beam. One of the oscillator beam is expanded and collimated so as to produce an expanded and collimated extra-cavity beam having a cross-sectional area substantially greater than the cross-sectional area of a portion of the active medium. Substantially the total intensity of the expanded collimated extra-cavity beam is introduced into the active medium so as to fill a volume of the active medium which is substantially greater than the volume of the above portion, thereby giving rise to amplification of the reintroduced beam. A polarizing element located within the resonator is used for the introducing. The intra-cavity beam is either transmitted through or reflected by the polarizing element while the extra-cavity beam is directed onto the polarizing element or transmitted therethrough without passing through said first outcoupler, a second outcoupling means being provided for coupling out the amplified beam.

Low divergence laser apparatus

Growing community of inventors

Yahud, Israel

Itamar Shoshan