TECHNOLOGY/BUSINESS OPPORTUNITY Once-Through Microchannel Laser Diode Cooling

Opportunity: Lawrence Livermore National Laboratory (LLNL), operated by the Lawrence Livermore National Security (LLNS), LLC under contract no. DE-AC52-07NA27344 (Contract 44) with the U.S. Department of Energy (DOE), is offering the opportunity to further develop and commercialize its novel Once-Through Microchannel Laser Diode Cooling technology.Background: All future high-power lasers systems utilize compact, high-power laser diode array pump systems. One of the key challenges of building high-power laser diode arrays with high packing density is how to effectively cool them. Proper cooling reduces stress on the laser diode arrays which in turn extends lifetime and improves output beam uniformity.Description: This invention improves upon previous approaches by extracting larger heat fluxes, improving thermal uniformity across diode emitters and bars, reducing stress on the laser diodes to extend diode lifetimes, and reducing the temperature difference between the diode and the

cooling fluid. The smaller temperature gradient serves to reduce the size, weight and power of the overall system.Advantages: LLNL’s Once-Through Microchannel Laser Diode Cooling technology has numerous advantages over traditional microchannel laser diode cooling technology, such as: More effective laser diode array cooling at high power levels Enables higher packing density Improves output beam uniformity Reduces stress and extends laser diode lifetime Reduces size, weight and power of overall system Potential Applications: LLNL’s Once-Through Microchannel Laser Diode Cooling technology has numerous applications including: Compact, efficient high power laser systems High intensity LED lighting systems Development Status: LLNL has filed for patent protection on this invention.Current stage of technology development: TRL 3 (October 2022) LLNL is seeking industry partners with a demonstrated ability to bring such inventions to the market. Moving critical technology beyond the Laboratory to the commercial world helps our licensees gain a competitive edge in the marketplace. All licensing activities are conducted under policies relating to the strict nondisclosure of company proprietary information. Please visit the IPO website at https://ipo.llnl.gov/resources for more information on working with LLNL and the industrial partnering and technology transfer process.Note: THIS IS NOT A PROCUREMENT. Companies interested in commercializing LLNL's Once-Through Microchannel Laser Diode Cooling Technology should provide a written statement of interest, which includes the following:Company Name and address.The name, address, and telephone number of a point of contact.A description of corporate expertise and/or facilities relevant to commercializing this technology.Written responses should be directed to:Lawrence Livermore National LaboratoryInnovation and Partnerships OfficeP.O. Box 808, L-779Livermore, CA 94551-0808Attention: IL-13628/TB521-23Please provide your written statement within thirty (30) days from the date this announcement is published to ensure consideration of your interest in LLNL's Once-Through Microchannel Laser Diode Cooling Technology.