Dr. Eyal Yacoby Profile

Dr. Eyal Yacoby

Researcher at Soreq NRC

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 23 October 2023 Presentation + Paper

Saddle-shape whispering gallery mode resonators: µm- to cm- scale

Eyal Yacoby, Yosef London

Proceedings Volume 12737, 1273708 (2023) https://doi.org/10.1117/12.2682043

KEYWORDS: Microresonators, Resonators, Laser resonators, Whispering gallery modes, Microspheres, Silica, Optical resonators, Structured optical fibers, Manufacturing, Gas lasers

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Proceedings Article | 8 March 2023 Presentation + Paper

Generation and mechanical tuning of Kerr frequency comb in stretchable whispering gallery modes microspheres

Eyal Yacoby, Yosef London, Shaul Pearl

Proceedings Volume 12447, 124470M (2023) https://doi.org/10.1117/12.2668669

KEYWORDS: Microspheres, Whispering gallery modes, Dispersion, Frequency combs, Microresonators, Silica, Polarization, Refractive index, Optical spheres

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Proceedings Article | 25 May 2022 Presentation + Paper

Whispering gallery modes silica resonators: a platform for optical sensing

Eyal Yacoby, Yosef London, Yekutiel Meshorer, Sharone Goldring, Chana Goren, Shaul Pearl

Proceedings Volume 12142, 121420T (2022) https://doi.org/10.1117/12.2617749

KEYWORDS: Sensors, Magnetic sensors, Microresonators, Silica, Magnetism, Laser sources, Semiconductor lasers, Magnetostrictive materials, Laser optics, Resonators

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Proceedings Article | 7 October 2019 Presentation + Paper

Measuring and modelling the beam quality in cesium DPALs

Ilya Auslender, Eyal Yacoby, Boris Barmashenko, Salman Rosenwaks

Proceedings Volume 11162, 111620B (2019) https://doi.org/10.1117/12.2533295

KEYWORDS: Resonators, Modeling, Semiconductor lasers, Laser beam propagation, Diodes, Beam quality measurement, Cesium, Modes of laser operation, Mirrors, Laser resonators

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Proceedings Article | 3 January 2019 Paper

Parametric study of the performance and beam quality of cesium DPAL: experiment and modelling

Ilya Auslender, Eyal Yacoby, Boris Barmashenko, Salman Rosenwaks

Proceedings Volume 11042, 110420F (2019) https://doi.org/10.1117/12.2520429

KEYWORDS: Resonators, Cesium, Lasers, Laser resonators, Modeling, Modes of laser operation

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Proceedings Article | 3 January 2019 Paper

Continuous wave diode pumped flowing-gas Cesium laser

Eyal Yacoby, Ilya Auslender, Boris Barmashnko, Salman Rosewaks

Proceedings Volume 11042, 110420D (2019) https://doi.org/10.1117/12.2518584

KEYWORDS: Cesium, 3D modeling, Continuous wave operation, Semiconductor lasers, Temperature metrology, Diodes, Gas lasers, Mirrors, Chemical species, Reflectivity

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Proceedings Article | 9 October 2018 Presentation + Paper

Parametric study of static and flowing-gas Cs DPAL

Ilya Auslender, Eyal Yacoby, Boris Barmashenko, Salman Rosenwaks

Proceedings Volume 10798, 1079808 (2018) https://doi.org/10.1117/12.2326903

KEYWORDS: Alkali vapor lasers, High power lasers, Numerical modeling, Numerical simulations, Cesium, 3D modeling, Resonators, Spherical lenses

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Proceedings Article | 9 November 2017 Paper

Scaling up and controlling beam quality of flowing-gas diode pumped potassium laser with different pumping geometries: 3D CFD modeling

Eyal Yacoby, Karol Waichman, Oren Sadot, Boris Barmashenko, Salman Rosenwaks

Proceedings Volume 10436, 104360D (2017) https://doi.org/10.1117/12.2277689

KEYWORDS: Optical pumping, Lasers, 3D modeling, Refractive index, Potassium, Output couplers, Laser beam propagation, Chemical species, Wavefronts, Semiconductor lasers

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Proceedings Article | 5 October 2017 Paper

Experimental studies and modeling of static Cs DPALs: dependence of the power and beam shape on different parameters

Salman Rosenwaks, Ilya Auslender, Eyal Yacoby, Boris Barmashenko

Proceedings Volume 10436, 104360C (2017) https://doi.org/10.1117/12.2277688

KEYWORDS: Cesium, Mirrors, Beam shaping, Semiconductor lasers, Lasers, Resonators, Wave plates, Collimation, Spherical lenses, Laser resonators

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Proceedings Article | 13 January 2017 Paper

3D CFD modeling of flowing-gas DPALs with different pumping geometries and various flow velocities

Eyal Yacoby, Karol Waichman, Oren Sadot, Boris Barmashenko, Salman Rosenwaks

Proceedings Volume 10254, 102540O (2017) https://doi.org/10.1117/12.2256026

KEYWORDS: 3D modeling, Cesium, Lasers, Optical pumping, Medium wave, Chemical species, Ionization, Laser beam propagation, Resonators, Computational fluid dynamics

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Proceedings Article | 22 April 2016 Paper

Modeling of static and flowing-gas diode pumped alkali lasers

Boris Barmashenko, Ilya Auslender, Eyal Yacoby, Karol Waichman, Oren Sadot, Salman Rosenwaks

Proceedings Volume 9729, 972904 (2016) https://doi.org/10.1117/12.2214975

KEYWORDS: Diodes, Cesium, 3D modeling, Gas lasers, Pulsed laser operation, Chemical species, Fluid dynamics, Optical pumping, Medium wave, Laser resonators, Lasers, Absorption

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Proceedings Article | 13 October 2015 Paper

3D CFD modeling of subsonic and transonic flowing-gas DPALs with different pumping geometries

Eyal Yacoby, Oren Sadot, Boris Barmashenko, Salman Rosenwaks

Proceedings Volume 9650, 96500E (2015) https://doi.org/10.1117/12.2208264

KEYWORDS: Cesium, 3D modeling, Resonators, Optical pumping, Ionization, Laser beam propagation, Semiconductor lasers, Fluid dynamics, Chemical species, Laser resonators

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Three-dimensional computational fluid dynamics (3D CFD) modeling of subsonic (Mach number M ~ 0.2) and transonic (M ~ 0.9) diode pumped alkali lasers (DPALs), taking into account fluid dynamics and kinetic processes in the lasing medium is reported. The performance of these lasers is compared with that of supersonic (M ~ 2.7 for Cs and M ~ 2.4 for K) DPALs. The motivation for this study stems from the fact that subsonic and transonic DPALs require much simpler hardware than supersonic ones where supersonic nozzle, diffuser and high power mechanical pump (due to a drop in the gas total pressure in the nozzle) are required for continuous closed cycle operation. For Cs DPALs with 5 x 5 cm² flow cross section pumped by large cross section (5 x 2 cm²) beam the maximum achievable power of supersonic devices is higher than that of the transonic and subsonic devices by only ~ 3% and ~ 10%, respectively. Thus in this case the supersonic operation mode has no substantial advantage over the transonic one. The main processes limiting the power of Cs supersonic DPALs are saturation of the D2 transition and large ~ 60% losses of alkali atoms due to ionization, whereas the influence of gas heating is negligible. For K transonic DPALs both the gas heating and ionization effects are shown to be unimportant. The maximum values of the power are higher than those in Cs transonic laser by ~ 11%. The power achieved in the supersonic and transonic K DPAL is higher than for the subsonic version, with the same resonator and K density at the inlet, by ~ 84% and ~ 27%, respectively, showing a considerable advantaged of the supersonic device over the transonic one. For pumping by rectangular beams of the same (5 x 2 cm²) cross section, comparison between end-pumping - where the laser beam and pump beam both propagate at along the same axis, and transverse-pumping - where they propagate perpendicularly to each other, shows that the output power and optical-to-optical efficiency are not affected by the pump geometry. However, the output laser beam in the case of end-pumped DPALs has a homogeneous spatial intensity distribution in the beam cross section, whereas for transverse-pumped DPALs the intensity varies significantly along the pumping axis (perpendicular to the resonator optical axis) and hence is strongly inhomogeneous in the laser beam cross section. Thus, higher brightness and better beam quality in the far field is achieved for the end-pumping geometry. Optimization of the resonator geometry for minimal gas temperature rise and minimal intra-resonator intensity (corresponds to a low ionization rate) is also reported.

Proceedings Article | 13 October 2015 Paper

Supersonic diode pumped alkali lasers: Computational fluid dynamics modeling

Salman Rosenwaks, Eyal Yacoby, Karol Waichman, Oren Sadot, Boris Barmashenko

Proceedings Volume 9650, 96500A (2015) https://doi.org/10.1117/12.2193574

KEYWORDS: 3D modeling, Cesium, Ionization, Optical pumping, Resonators, Laser resonators, Semiconductor lasers, Diodes, Chemical species, Computational fluid dynamics

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Showing 5 of 13 publications

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