Researcher in Physics

Company Description

Join us and make YOUR mark on the World!

Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability.

Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.

Job Description

We are seeking a Laser Physicist- Postdoctoral Researcher within our Laser Science and Systems Engineering Program to participate in the research, development, and application of advanced solid state, high energy laser technology. This work will take place within the National Ignition Facility & Photon Science (NIF&PS) Directorate, home to the world's most energetic laser. It is an exciting time to join the team that achieved fusion ignition in December 2022, a historic moment in science, opening up new physics regimes and setting the stage for new fusion energy possibilities.

You will conduct research in the fields of design, modeling, and commissioning of cutting-edge laser technology development and will execute experiments to validate advanced laser concepts relevant to high energy and high power laser driver architectures, laser propagation/amplification, and laser matter interaction research. This position is in the Laser Science & Systems Engineering (LSSE) Program within the National Ignition Facility and Photon Science (NIF&PS) Principal Associate Directorate (PAD).

In This Role, You Will

• Conduct research and development in one or more of the following areas: modeling and experimental investigations on advanced kJ-class laser architectures, frequency conversion and non-linear optics, and efficient cooling concepts for high average power laser systems.
• Organize, analyze, and interpret experimental and simulation data using statistical and computational tools and presenting findings clearly through detailed reports, visualizations, and presentations to support scientific communication and decision-making.
• Pursue independent (but complementary) research interests and interact with a broad spectrum of researchers internally and externally to the Laboratory.
• Collaborate with others in a multidisciplinary team environment to accomplish research goals.
• Publish research results in peer-reviewed scientific or technical journals and present results at external conferences, seminars, and/or technical meetings.
• Perform other duties as assigned.

Qualifications

• PhD in laser physics, applied physics, general physics, atomic physics, optics and optoelectronics, or related technical field or discipline.
• Experience in designing, building, and/or operating mid-to-high-energy (from mJ to kJ-class) solid-state lasers.
• Experience in experimental physics in one or more of the following areas: advanced polarization physics, solid state lasers, laser cavities, short pulse laser technology, frequency conversion, non-linear optics, crystal optics, thermo-mechanical fine-element calculations interfaced with optical performance.
• Experience with MATLAB, Python and/or similar scripting and data analysis tools.
• Ability to perform as an innovative researcher or experimentalist with a broad range of experience in experimental design, techniques, and execution.
• Experience developing independent research projects, including publication of peer-reviewed literature.
• Proficient written and verbal communication skills to collaborate effectively in a team environment and present and explain technical information within a collaborative, multidisciplinary team environment.

Qualifications We Desire

• Experience with laser, pulsed power sources, high density plasma interactions and/or conducting high energy density experiments.
• Experience with optoelectronic device simulation (LaserMOD, LASTIP, PICS3D, Silvaco and/or self-written code) and/or optical system design and analysis using sequential and/or non-sequential raytracing tools (Zemax, Code V, OSLO, FRED, LightTools, or ASAP).
• Experience with electromagnetic field simulation using finite-difference time domain, finite element, finite element thermal simulation (e.g., COMSOL, ANSYS, and/or self-written code), and/or beam propagation simulation tools (FIMMWave, BeamPROP, etc., and/or self-written code).
• Experience with CAD-based mechanical design (e.g., AutoCAD, SolidWorks, SolidEdge, etc.) and test equipment control and automation software development (LabVIEW, Python, MATLAB, etc.).

Pay Range

$123,048 Annually

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage. An employee's position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

Additional Information

#LI-Onsite

Position Information

This is a Postdoctoral appointment with the possibility of extension to a maximum of three years, open to those who have been awarded a PhD at time of hire date.

Why Lawrence Livermore National Laboratory?

• Included in 2026 Best Places to Work by Glassdoor!
• Flexible Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit https://www.llnl.gov/inclusion/our-values

Security Clearance

None required. However, if your assignment is longer than 179 days cumulatively within a calendar year, you must go through the Personal Identity Verification process. This process includes completing an online background investigation form and receiving approval of the background check.

National Defense Authorization Act (NDAA)

The 2025 National Defense Authorization Act (NDAA), Section 3112, generally prohibits citizens of China, Russia, Iran and North Korea without dual US citizenship or legal permanent residence from accessing specific non-public areas of national security or nuclear weapons facilities. The restrictions of NDAA Section 3112 apply to this position. To be qualified for this position, Candidates must be eligible to access the Laboratory in compliance with Section 3112.

Pre-Employment Drug Test

External applicant(s) selected for this position must pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Wireless and Medical Devices

Per the Department of Energy (DOE), Lawrence Livermore National Laboratory must meet certain restrictions with the use and/or possession of mobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area where you are not permitted to have a personal and/or laboratory mobile device in your possession. This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices.

If you use a medical device, which pairs with a mobile device, you must still follow the rules concerning the mobile device in individual sections within Limited Areas. Sensitive Compartmented Information Facilities require separate approval. Hearing aids without wireless capabilities or wireless that has been disabled are allowed in Limited Areas, Secure Space and Transit/Buffer Space within buildings.

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https://www.llnl.gov/sites/www/files/2023-05/LLNL-Job-Fraud-Statement-Updated-4.26.23.pdf

Equal Employment Opportunity

We are an equal opportunity employer that is committed to providing all with a work environment free of discrimination and harassment. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws.

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