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Pulsed laser polymerization (PLP) is a radical polymerization initiated by short, periodic laser pulses that generate a burst of radicals at well-defined times, thereby imprinting a characteristic molecular-weight pattern from which propagation rate coefficients can be extracted ^[1][2]. In advanced polymer synthesis and characterization the concept is bounded by the pulsed photonic initiation and by the use of that pulse train as a kinetic clock, rather than solely as a preparative light source. Essential features are a photoinitiator that decomposes within the pulse, a dark interval during which chains propagate, and a subsequent pulse that terminates a fraction of those chains by newly generated radicals, producing an inflection in the molecular-weight distribution at a chain length equal to the product of the propagation rate coefficient, the monomer concentration, and the pulse period. High-frequency (kilohertz) PLP resolves concurrent secondary and tertiary radical propagation and backbiting in acrylate systems ^[2]. Two-photon PLP extends the same timing logic to near-infrared excitation ^[1]. The method is distinguished from continuous photopolymerization by the discrete temporal structure of initiation and from pulsed-laser deposition by the fact that the product is a dissolved or bulk polymer rather than a thin film.