Engineer Design

Joseph H. Zarrabi

***** ******* ****

San Diego, CA 92131

858-***-**** (Home)

858-***-**** (Cell)

*********@*****.***

SUMMARY

Result oriented, hands-on experimental physicist with diverse technical and

management experience. Highly adaptable to different environments;

experience in R&D and product design. Over ten years of hands-on experience

in design and development and management of optical systems and diode-

pumped solid-state lasers and high-power semiconductor laser-diodes used

for medical, military and civilian applications.

EXPERIENCE

Aerius Photonics, Ventura, CA

Laser Scientist/Optical Engineer (Consultant), June 2010-present

. Managed the design, simulation and modeling of diode-pumped, solid-

state laser designators and optical system

General Atomics, San Diego, CA

Laser Scientist/ Optical Engineer, Jan. 2003-Feb. 2010

. Design and development of time dependent 3D imaging (LIDAR) technologies

for DARPA and Air Force.

. Managed the development of short pulse, diode-pumped solid-state laser

used for 3D time dependent imaging (LIDAR)

. Managed the development of a beam diagnostic system for the optical

characterization of a 150 kW laser, which include fully automated

measurements of Near-field, Far-field, beam jitter and wave front

aberrations of the laser. The system was controlled with LabView and

Mathlab script was used for data analysis.

. Expert in laser resonator design and modeling using ZEMAX, MATLAB

. Lead laser scientist in charge of design and development of novel diode-

pumped Q-switched solid-state lasers used for time dependent imaging and

laser designation and range finding

. Used Zygo interferometer for determination of the wavefront distortions

in various diode-pumped gain modules

. Managed the procurement of laser and optical components

. Interacted with laser-diode vendors and optical companies to specify

parameters for the laser illuminators used for a government funded

project

. Designed and developed a series of diode-pumped, passively Q-switched

laser oscillators with pulse width ranging from ~ 300 ps to 30 ns.

. Used ZEMAX for sequential and non-sequential ray tracing of optical

system and lasers

. Used GLAD (General Laser Analysis and Design) for the simulations of

lasers and beam propagation

Ditech Communications, Mountain View, CA

Senior Optical Engineer, Nov. 2000 - Nov. 2002

. Managed setting up a long-haul/Ultra-long haul DWDM fiber-optic

communication system.

. Designed experiments to study various impairments such as dispersion,

SBS, Self-phase and cross-phased modulations and four-wave mixing in

various fibers.

. Designed and built a high-power tunable pump laser for Erbium-doped

fiber amplifiers. The optimum pump wavelength was determined

experimentally for high-gain and low noise-figure EDFAs. As a result

of this study, the manufacturing yields increased from 25% to 80%.

MetroLaser, Inc., Irvine, CA

Research Scientist, Oct. 1999 - Nov. 2000

. Design and analysis of various laser diagnostic systems based on

Holography and Interferometery such as Particle Size Analyzer and Laser

Doppler Vibrometer.

. Wrote various proposals to government agencies for the design and

development of unique laser-based instrumentation used for military and

civilian applications.

Laser Power Research, San Diego, CA

Research Scientist, Aug. 96 - Sept. 99

Lead scientist for design, analysis of various diode-pumped visible lasers

used for Laser Display and medical applications.

Accomplishments:

. Design and analysis of a diode-pumped, single-frequency mirochip laser at

1.55 (m for fiber optics communications, DWDM and cable TV applications.

. Managed the development of various diode-pumped visible lasers.

. Designed and analyzed various optical systems to convert a linear beam

into a tight circular beam used for pumping of solid-state lasers.

. Wrote proposals to government agencies for R& D funding.

TECHNICAL SKILLS:

. Used GLAD (General Laser Analysis and Design) for the simulations of

lasers and beam propagation for LIDAR and optical systems

. Design of various optical systems including spectrometers, imaging

systems using ZEMAX

. Used Solid Works Simulations to determine temperature distribution inside

a diode-pumped, slab laser

. Used SigFit software to determine surface deformation and optical

aberration of slab lasers by analyzing the FEA data generated by

NASTRAN/PATRAN or SolidWorks Simulations

. Extensive knowledge of computer programs, including LabView, Visual

Basic, Excel, Microsoft Office and Microsoft Project.

Polaroid Corporation, Cambridge MA

Research Scientist, 1986 - 1996

. Managed testing and reliability evaluation of high power GaAlAs laser

diodes, GaAsP and GaAlAs surface emitting LEDs.

. Managed a team of engineers and technicians to establish testing criteria

for the production of high-power, laser-diodes used by printing division.

. Designed and implemented a multi channel laser-diode testing system for

burn-in and reliability assessment.

. Designed and implemented a miniaturized diode-pumped solid-state blue and

green laser for optical disk storage.

. Design and analysis of various laser-diode structures leading to a 30 %

increase in electrical to optical efficiency and 25 % reduction of far-

filed angle.

EDUCATION:

Ph.D., Applied Physics, City University of NewYork, N.Y.

M.S., Applied Physics, Fairleigh Dickenson University, Teaneck, N.J.

US Citizen with secret security clearance

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