TY - RPRT TI - Photon–photon chemical thermodynamics of frequency conversion processes in highly multimode systems AU - Ren, Huizhong AU - Pyrialakos, Georgios (ORCID:0000000286129694) AU - Zhong, Qi AU - Wu, Fan (ORCID:0000000294707677) AU - Khajavikhan, Mercedeh (ORCID:0000000270911470) AU - Christodoulides, Demetrios (ORCID:0000000336307234) PY - 2025 DO - 10.1038/s41377-025-01856-4 UR - https://www.osti.gov/biblio/3673149 ID - 3673149 ER -