R&D VCSEL Designer

Lumentum • San Jose, CA

10d • $112,050 - $192,500

About The Position

The R&D VCSEL Designer designs new GaAs-based VCSEL devices and technology platforms. The role applies expertise in epitaxial growth and wafer fabrication to develop device designs—including mask layouts and epitaxial structures—and fabrication flows involving processes such as etching, metallization, dielectric passivation, implantation, oxidation, and wafer fusion.

The designer characterizes devices through laser diode testing at wafer probe and chip-on-carrier, measuring light-voltage-current (LIV), spectra, polarization stability, and near-field and far-field beam parameters under continuous-wave, millisecond-pulsed, and nanosecond-pulsed operation. The role analyzes data and device physics to connect characterization results to design inputs, including epitaxy, fabrication, emitter design, and die layout, and uses these findings and modeling tools to improve performance.

The role coordinates with Lumentum groups and contract manufacturers to transition designs, wafer fabrication flows, and characterization methods into manufacturing and product release. It also generates intellectual property from new design and manufacturing ideas.

Requirements

• PhD in optoelectronics or another relevant major, or a Master's degree with at least 3 years of experience.
• Experience with VCSEL design and wafer fabrication.
• Knowledge of semiconductor device physics, process technology, and equipment.
• Experience with software data analysis tools such as Excel, JMP, or Minitab.
• Experience with photomask layout and data processing using tools such as Python or Matlab.
• Ability to work effectively in cross-functional teams as both a team leader and contributor.
• Strong verbal and written communication skills.

Nice To Haves

• PhD with industry experience.
• Optoelectronic device modeling, including electrical, optical, and thermal modeling.

Responsibilities

• Design new GaAs-based VCSEL devices and VCSEL technology platforms.
• Use knowledge of epitaxial growth and wafer fabrication to develop mask layouts, epitaxial structures, and fabrication flows.
• Develop fabrication processes involving etching, metallization, dielectric passivation, implantation, oxidation, wafer fusion, and related techniques.
• Characterize devices through laser diode testing at wafer probe and chip-on-carrier, including LIV, spectra, polarization stability, and near-field and far-field beam measurements under CW, millisecond-pulsed, and nanosecond-pulsed operation.
• Analyze characterization data and device physics to correlate performance with epitaxy, fabrication, emitter design, and die layout, and use the results and modeling tools to improve device performance.
• Coordinate with internal Lumentum groups and contract manufacturers to transition designs, fabrication flows, and characterization methods into manufacturing and product release.
• Generate intellectual property from new design and manufacturing ideas.

Benefits

• Flexible time off.
• Health and wellness benefits, including physical and mental health support.
• Tuition reimbursement and career growth support.
• Free gym, games room, and prayer room.
• Subsidized meals and free coffee and tea.
• Employee stock options and incentive plans.
• Competitive total compensation packages, which may include an annual bonus, equity, and health and welfare benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: Ph.D. or professional degree