Design Blueprint: An Optical Parametric Chirped-Pulse Amplifier Sized by Parametric Gain and Photon-Energy Partition

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24155323): This paper presents a computed design for a three-stage optical parametric chirped-pulse amplifier (OPCPA) pumped at 515 nm, amplifying a 800 nm signal and generating a 1446 nm idler. The sizing follows from applying the relevant intensity, thermal, nonlinear and geometric bounds at a single stated operating point, with every number produced by a deposited computation. The headline result is an idler wavelength fixed by energy conservation at 1446 nm, a final-stage pump energy of 120 mJ with 55% depletion, a signal output of 42.5 mJ and an idler output of 23.5 mJ, with the Manley-Rowe partitio Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.