Photonics Engineer
Coherent Corp. · Santa Clara, California, US
Primary Duties & Responsibilities - Device Design & Simulation - Design and model backside-emitting VCSEL structures optimized for 1060 nm emission. - Develo...
Job description
Primary Duties & Responsibilities: - Device Design & Simulation - Design and model backside-emitting VCSEL structures optimized for 1060 nm emission. - Develop and simulate photonic crystal cavity structures to enhance light–graphene interaction. - Optimize device parameters for >100 GHz 3 dB bandwidth, 3 dB extinction ratio. - Graphene Integration - Collaborate with Graphenea on graphene deposition and doping strategies. - Evaluate doping approaches (boron and molecular adsorbate) for Fermi level tuning and resistance control. - Define gate oxide materials and thicknesses to minimize RC time constants in device performance. - Fabrication Coordination - Work with Coherent’s Sherman facility to coordinate deposition, patterning, and etching processes. - Oversee e-beam lithography (EBL) and reactive ion etching (RIE) for photonic crystal patterning. - Integrate ITO contacts and graphene layers for electrical backgating. - Testing & Characterization - Perform electrical efficiency and high-speed modulation testing of graphene-based VCSELs. - Conduct optical reflection and modulation experiments using spectrometers, beamsplitters, and photodiodes. - Collaborate with Coherent teams in F...