The 4th International Conference and Expo on Lasers, Optics & Photonics (OPTICS2025) will be held during November 24-26, 2025, in Paris, France. OPTICS is an established event, attracting global participants intent on sharing, exchanging, and exploring new avenues of lasers, optics, and photonics-related research and latest developments. The event will feature world-class (highly cited) Plenary Speakers, established Keynote Speakers, active Invited Speakers, and fresh Contributed Speakers. Additionally, a variety of poster presentations, workshops, and special sessions will engage the audience.