Abstract
The major point I'd like to articulate, is to carry out a formally integrated physical interpretation, onthose conventionally well-devised experiments, with each theoretical presupposition of them to be asexplicit as possible. This contrasts itself to the usual naive analysis for the practice of instrumentation.The essential matter begins at re-formulating a rational language for physical measurements, in thatattempt to resolve the epistemological poverty beset by the regularization program for conventional secondquantized Dirac equation [section 1.1, a much-reduced illustration]. Following operational recognition ofthe generating process of Green's functions, we are able to let the primitive Maxwell-Dirac coupling actlike an extended source, such that the theory of sources, an operational toolkit for physical description,is well-devised. Such re-formulation is purely phenomenological that, whether if any prediction is corrector not, relies on how real those sources are speci ed according to our knowledge. The question to theprimitive coupling is left open [section 1.2].We are then to justify definite spectral terminology out of the source-theoretic linear spectroscopyand saturation spectroscopy, with no quantum-mechanically amphibolous arguments to the compositelinear result [section 2.1-2.5]. Systematic survey is applied to CO2 gas [section 2.6]. Various experimentalschemes have been set up for the indirect/direct frequency stabilization of the CO2 laser upon its Doppler-free, self-coincident resonance [section 2.7].No complex source-theoretic application is carried to the second harmonic generation of the CO2 laser,since it is with a simple-specified SHG source, and the paraxial approximation has simplified Maxwellwave equation into a linear first order differential one [section 3.1.1-3.1.2]. The reversible transient e ectis remedied within the optimized description, in terms of an additional phase mismatch [section 3.1.3-3.1.4]. Basic field-theoretic viewpoint helps to derive cavity-enhanced result [section 3.1.5]. Optimizedexperimental is realized with the crystal: ZnGeP2 [section 3.2].Epilogue remarks the preparation for an precision measurement project [chapter 4]. Appendicestabulate relevant information and specifications [appendix A, B, C].