RF Induction Systems Engineer – Crystal Growth & Melting Equipment
About The Position
Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!
Requirements
- Bachelor’s or Master’s degree in Electrical Engineering, Physics, or related field
- 5+ years of experience in RF power systems, induction heating, or high-power electronics
- Strong understanding of resonant circuits (series and parallel), impedance matching, and RF power delivery systems
- Hands-on experience with induction heating systems (kHz range preferred)
- Experience with high-temperature or vacuum systems
Nice To Haves
- Experience with crystal growth systems (CZ, HEM, skull melting, Bridgman)
- Familiarity with reactive oxide or semiconductor materials
- Experience with COMSOL, ANSYS Maxwell, or similar tools
- Knowledge of thermal management and cooling design, high-current bus design, and vacuum and controlled atmosphere systems
- Experience working with RF generators (solid-state or tube-based)
Responsibilities
- Design and optimize current RF induction heating systems (typically 1–50 kHz range)
- Develop and tune series and parallel resonant circuits for high-power operation
- Specify and integrate RF generators, matching networks, and capacitor banks
- Design and optimize induction coils for thermal profile and coupling efficiency
- Support and develop crystal growth melting systems
- Optimize thermal gradients, melt stability, and power delivery
- Integrate RF systems with crystal growth platforms (e.g., CZ, HEM, skull melting)
- Develop process recipes and operating envelopes for different materials
- Perform electromagnetic and thermal simulations (e.g., COMSOL, ANSYS)
- Model coupling efficiency, current distribution, and heating profiles
- Analyze load-dependent impedance behavior and resonance shifts
- Lead tuning of RF systems under dynamic load conditions
- Diagnose issues related to detuning and reflected power, instability and oscillation, coil overheating and inefficiency
- Optimize performance across full process cycle (cold start → melt → steady-state)
- Design and review coil assemblies, cooling systems (water-cooled copper structures), and bus bars and power delivery systems
- Ensure robust high-current, low-loss electrical connections
- Develop test plans and validation procedures
- Analyze system performance using current/voltage measurements, phase and impedance analysis, and thermal diagnostics
- Lead commissioning of new equipment and upgrades
- Work with materials scientists, process engineers, and mechanical teams
- Support scale-up from R&D to production systems
- Provide technical leadership and mentorship to junior engineers
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What This Job Offers
Job Type
Full-time
Career Level
Senior
