Saratov University staff and graduates participate in the organization of one of the largest international scientific photonics events, SPIE Photonics West. It will be held on January 17-22 in San Francisco. The Symposium brings together conferences, exhibitions, and seminars in the fields of lasers, biomedical optics, optoelectronics, and technologies supporting biophotonic and quantum applications, including unique imaging technologies in biology and medicine. Professor Valery Viktorovich Tuchin, Head of the Department of Optics and Biophotonics at the Institute of Physics and Head of the SSU Scientific and Medical Center, is Chairman of the conference "Dynamics and Fluctuations in Biomedical Photonics XXIII" and a member of the program committees of the forums on marker-free biomedical imaging and sensing, as well as on optical coherence tomography and coherent optical methods in biomedicine, which he founded on 30 He was its permanent chairman for 25 years ago. Valery Viktorovich's students, graduates of SSU Igor Meglinsky, Irina Larina, Kirill Larin, Vladislav Toronov and Anna Yaroslavskaya, will speak at the symposium as world leaders in the field of biophotonics. They will participate as plenary or invited lecturers, lecturers in special "hot" areas of biophotonics, and are chairs or members of conference program committees. In addition, the program will feature a scientific report by Nadezhda Semenova, Associate Professor of the Department of Radiophysics and Nonlinear Dynamics, and Nadezhda Krapivina, Assistant Professor of the Department of Physics of Open Systems, in collaboration with V.V. Tuchin, "Mathematical modeling of cancer cell proliferation under the influence of external osmotic and mechanical factors in optical imaging and phototherapy." The work is devoted to the key problem of modern biomedicine – improving the effectiveness of optical cancer treatment methods.