Optical Co-Op | ASML

Date Posted: 
Tuesday, February 8, 2022

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Position Location: 
Wilton, CT
Job Description: 


ASML US, including its affiliates and subsidiaries, bring together the most creative minds in science and technology to develop lithography machines that are key to producing faster, cheaper, more energy-efficient microchips. We design, develop, integrate, market and service these advanced machines, which enable our customers - the world’s leading chipmakers - to reduce the size and increase the functionality of their microchips, which in turn leads to smaller, more powerful consumer electronics. Our headquarters are in Veldhoven, Netherlands, and we have 18 office locations around the United States including main offices in Chandler, Arizona, San Jose and San Diego, California, Wilton, Connecticut, and Hillsboro, Oregon.

Job Mission

ASML’s YieldStar  Sensor Group in Wilton CT is looking for a co-op to join the team for a period of at least 6 moths to focus on a project in the area of optical engineering to support current or future YieldStar product.  The candidate should be pursuing a degree in  Physicist/Engineer with preference to optical engineering that give him/her the ability to support and develop optical / photonic sensor systems used within ASML’s photolithography tools. 

This position may require access to controlled technology, as defined in the Export Administration Regulations (15 C.F.R. § 730, et seq.). As a condition of employment, qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require the Company to proceed with candidates who are immediately eligible to access controlled technology.

Job Description

Key components of this position are:

Using Optical engineering expertise the candidate is expected to perform work in some of these general area of Optical Engineering:

  • Perform Optical  design, optical tolerancing and modeling with CodeV and/or Zemax.
  • Physical Optics Simulation (wave propagation, partial coherence calculation and other optical effects) in Matlab, FRED and CodeV  or other suitable design tools.
  • Perform Polarization optics error budgeting  and polarization modeling
  • Building and aligning complex sensors using diverse mechanical, collimation and interferometry
  • Test stand design and build: concept, error budget, realization
  • Optical sensors Hardware build and debugging
  • Working knowledge with diverse optical devices and sensors: objectives, collimation and relay optics, fibers, cameras and detectors 

This position is located on-site in Wilton, CT.  It requires onsite presence to attend in-person work-related events, trainings and meetings and to further ensure teamwork, collaboration and innovation.


Looking for candidate That is currently pursuing a degree in optical engineering or closely related areas of engineering and physics.  Preference for a candidate pursuing a Master or a Ph.D degrees.  Undergraduate students with specific expertise in key areas of optical design and optical systems will be considered.


Student  must demonstrate some experience in some of these areas:

  • Optical design and tolerancing using CodeV or equivalent SW package.
  • Physical optics modeling with FRED or equivalent SW package.
  • Optical sensors alignment experience using diverse alignment strategy and tools like optical collimators, mechanical gaging and interferometers.
  • Optical sensor metrology test design and build
  • Expertise with diverse optical technologies and devices: polarization devices, relays, objectives, light sources, fibers, camera and detectors.

Personal Skills

  • Can learn and apply new information or skills.
  • Must be able to read and interpret data, information, and documents.
  • Strong customer focus and commitment to customer satisfaction through prioritization, quality, efficiency and professionalism.
  • Ability to complete assignments with attention to detail and high degree of accuracy.
  • Proven ability to perform effectively in a demanding environment with changing workloads.
  • Result driven-demonstrate ownership and accountability.
  • Identifies bottlenecks and drives improvements.
  • Demonstrate open, clear, concise and professional communication.

Other information

This position is located on-site in Wilton, CT.  It requires onsite presence to attend in-person work-related events, trainings and meetings and to further ensure teamwork, collaboration and innovation.

Additional Responsibilities (as needed in the cleanroom and/or labs):

The role will require some clean room engineering support during new product introduction and customer escalation to find root cause.  


Request an Interview with Adel Joobeur, adel.joobeur@asml.com