Laser application Engineer

Satya Gollapudi

*** ******** ***, ***# **, Copiague, NY 11726

Phone: 631-***-****(H), 631-***-**** (C)

Email: ******.*********@*****.***

LASER APPLICATION ENGINEER

• More than 6+ years of experience in Laser micro machining and marking systems

• Proficient in laser material interaction and characterization tools, Diode-pumped solid-state lasers (DPSSL), Femtosecond, Pico-second and Excimer lasers.

• Expertise in functional activation of engineering materials like metals, polymers, and ceramics.

• Expertise in laser processing of multi crystalline and polycrystalline solar cells and resistor trimming for electronic applications

• Experience in working with customers and committed to assisting other team members.

LASER PROFICIENCY

Laser technology

• Expertise in Laser material processing using YVO4, YAG, CO2 and Excimer Lasers. Extensive knowledge in ultra fast laser micromachining and laser-induced material processing.

• Wide knowledge in laser applications - drilling, cutting, scribing, marking and surface patterning.

• Experienced in handling high power lasers, YAG laser, lamp pump laser, Q-switched solid-state and gas lasers; Nanosecond to ultra short-pulsed femtosecond lasers.

• Fixed beam delivery systems, harmonic generators and galvo scanners.

• Experienced with various laser optics like f-theta lens, beam expanders, wave plates and homogenizers.

Material Characterization/ Electrical transport measurements

Experience in Morphological and structural characterization using optical and Stereomicroscopes, SEM, EDX, RIR, FTIR, Raman Spectroscopy and XPS.

Semiconductor material processing and device fabrication in clean room

E-beam and Focused Ion beam lithography. Hands-on experience in laser edge isolation, back contact drilling, ITO patterning and scribing on multi and poly crystalline solar cells.

EXPERIENCE

Laser Application Engineer [Sep 2009 – Present]

Quantronix Corporation, New York, USA

• Responsibilites include setting up and managing the Laser Application lab and Laser Systems

• Planning the industrial experiments with various lasers to suit the customer requirements

• Handling the feasibility investigation with IR, Green, UV and femtosecond lasers

• Setting up the fixed beam delivery and galvo scan head systems for developing customer prototype systems.

• Responsible for studying the effect of laser material interaction with respect to wavelength and pulse width (nanosecond to femtosecond)

• Analysing processing quality, time and customer machine requirement during the laser application

• Retrofitted On The Fly (OTF) marking technology for high speed conveyer applications.

• Experience with all types of Quantronix laser series - Osprey, Hawk, Darwin, Integra and Katana.

• Extensive knowledge of laser fixed beam delivery softwares - Q-Mark, Q-Commander and Q-Integrator.

• Hands on experience with laser marking softwares like Q-Mark, SAM light and Arges.

• Experience using 3D engraving softwares tools like XLCAM

Laser Research Scientist [Jan 2005 – Aug 2009]

Laser Zentrum Hannover, Hannover, Germany

• NANOGLOWA (Nano-Membranes against Global Warming) effort- an EU 6th Framework Project. Responsibilities included Design and Development of Comb sensors for monitoring the percentage of carbon dioxide filtered by the Nano-Membranes; Functional activation of Polymer surfaces to enhance the ionomer growth on Ionomer High Voltage Membranes (IHVM) using Frequency-converted diode-pumped solid-state lasers.

• Laser – Photovoltaic project - Responsibilities included Laser texturing on the surface of mono- and multi-crystalline silicon solar cells to enhance the light coupling efficiency using frequency converted diode-pumped solid state lasers and ultra-short pulse laser systems.

• Successful accomplishment of project on Correlation between water contact angle varied by laser treatment and cell growth on polyimide foils for application in Cochlear implants. Acheived the goal of examining the growth behavior of cells on Polyimide foil in dependence of the water contact angle using DPSS lasers.

• Involved in projects based on Laser Processing for the semiconductor industry and other medical applications like smart surfaces. Applications included material processing, medical application, and flexible circuits.

Research Assistant [ Dec 2003 - Dec 2004 ]

Laser Zentrum Hannover, Hannover, Germany

• Worked on laser applications using pulsed UV Diode-Pumped solid-State laser (Coherent Nd: YVO4 at 355 nm, 25 ns) creating slots on optical fibers which is integrated as an Anti-Pedestrian Sensor in cars.

• Successfully completed optical probe techniques such as FTIR to derive the factors governing laser applications.

• Obtained equipment proficiency in SEM, AFM, Surface profiler, X-ray diffraction, FTIR, EDX and Optical microscopy.

• Obtained process proficiency in Gas and Solid State Laser Systems, Ultra High Vacuum Systems, Sputtering Systems

• Successfully investigated the effect of UV laser radiation on the wettability characteristics on the polymers surfaces. The experiments are aimed at generating functional surfaces like hydrophobic and hydrophilic surfaces, which involved calculating the interfacial tensions, correlating the surface roughness with wetting characteristics and the stability of the modified surface.

• Hands on experience with optical systems in various lasers ranging from Excimer to femto second laser.

• Micro-structuring of various material like metals, polymers, ceramics silicon, glass using UV-DPSS lasers, Excimer lasers, CO2 lasers, YAG lasers. Proficient in handling Homogenizers, CNC coding.

• Hands on experience installing and working with 2D and 3D highly dynamic scanning systems; laser annealing and laser cutting.

Student Assistant [ Dec 2002 – Dec 2003 ]

Institute of Nano-structure Technologies and Analytics (INA), University of Kassel, Kassel

• Worked as an assistant in the clean Room laboratory at INA for the development of VCSEL’s. Involved in design/development and power level measurements using a simulation tool.

• Successfully completed the project work at INA on Bionics (nature to science), worked on the development of smart surfaces like Lotus surfaces (self cleaning surfaces).

PUBLICATONS

• Satyanarayana GOLLAPUDI, Frank OTTE, Thorsten TEMME, Uwe STUTE, In: Laser precision micro fabrication LPM, 4.-8. April 2005, Williamsburg, Virginia, USA. S. 171-176;Wettability modification on polymer surfaces using UV laser radiation

• Tönshoff, H.; Stute, U.; Otte, F.; Meyer, F.; Gollapudi, S.: Micro-structuring of thin film nano-coatings and modification of functional surfaces by UV-laser radiation. In: 5th International Conference THE Coatings, 5.-7. October 2005, Chalkidiki, Greece. S. 217-227

• Satyanarayana GOLLAPUDI, Frank OTTE, Thorsten TEMME, Uwe STUTE; Functional activation of polymers surfaces using diode-pumped solid-state laser; ACHEMA 2006, 28th international Exhibition -Congress on chemical, Environmental and Biotechnology, 15-19 May 2006, Frankfurt, Germany.

• S.Gollapudi1; Uta Reich2; G. Reuter2; T.Lenarz2; K.Samm1; U.Klug1; R. Kling1 Laser Controlled Adhesion properties of biocompatible polymer surfaces for medical applications 1.Laser Zentrum Hannover, Hollerithallee 8, 30419 Hannover, Germany; 2. Hannover Medical school (MHH), Carl-Neuberg-Str. 1, 30625 Hannover, Germany 6th International Conference on Photo-Excited Processes and Applications (ICPEPA), 9-12 Sep. 2008, Sapporo, Hokkaido, Japan

• Reich U.1, Fadeeva E.2, Gollapudi S.2, Chichkov B.2, Klug U. 2, Kling R.2, Lenarz T.1, Reuter G.1 New micro- and nanoscaled structure concepts for auditory implant surfaces , 7th international symposium on SPM life sciences, JPK Berlin, 8.-9. October, 2008, Berlin, Germany. P-21, 1.Laser Zentrum Hannover, Hollerithallee 8, 30419 Hannover, Germany; 2. Hannover Medical school (MHH), Carl-Neuberg-Str. 1, 30625 Hannover, Germany

• Reich U.1, Fadeeva E.2, Gollapudi S.2, Chichkov B.2, Klug U. 2, Kling R.2, Lenarz T.1, Reuter G.1 Sustainable Bioresorbing and Permanent Implants of metallic and ceramic materials, SFB599, 2.Laser Zentrum Hannover, Hollerithallee 8, 30419 Hannover, Germany; 1. Hannover Medical school (MHH), Carl-Neuberg-Str. 1, 30625 Hannover, Germany

• Satyanarayana Gollapudi, Rainer Kling, Ulrich Klug, Andreas Ostendorf, Katja Samm: Laser Controlled Multifunctionalization of polymer surfaces for industrial applications (M605). 27th international congress on applications of lasers and electro-optics (ICALEO). October 20-23 2008, Pechanga Resort and Casino, Temecula , California, US

• S. Gollapudi, R.Rejnowski, T.Fabian U.Stute; Laser treatment of polymer surfaces for the enhancement of cell growth

EDUCATION

• Master of Science in Electrical Communication Engineering (03/2002 –02/2005)

University of Kassel, Kassel, Germany

• Bachelor of Science in Electrical Electronics Engineering (09/1997 – 08/2001)

University of Madras, Chennai, India

References available upon request

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