Mono-planar sealed beam alignment device

A laser beam alignment assembly, comprising:

• a laser diode with a laser control to control a laser beam;
• a plurality of focusing lenses;
• a data acquisition system;
• a computing system coupled to the data acquisition system;
• and
• a laser beam alignment device coupled to a detector, an amplifier with a resonant filter, and the data acquisition system, wherein the laser beam alignment device comprises:
• a plurality of fasteners holding an upper plate;
• an upper O-ring;
• a lower O-ring;
• an inner motion plane;
• an outer motion plane;
• and
• a main housing affixed to the laser beam alignment assembly and configured to provide laser beam alignment with respect to a first axis and a second axis opposed at 90 degrees to the first axis of the laser beam alignment assembly;
• wherein the first axis and the second axis on a single plane are normal to an optical axis of a laser beam of the laser beam alignment assembly, and
• wherein the plurality of fasteners secure the upper O-ring, the inner motion plane, the lower O-ring, and the outer motion plane into the main housing, creating beam path pressurization.

A method for a laser beam alignment assembly using a laser beam alignment device, the method comprising:

• affixing a main housing of the laser beam alignment device to the laser beam alignment assembly to provide laser beam alignment of a laser beam with respect to a first axis and a second axis opposed at 90 degrees to the first axis of the laser beam alignment assembly;
• adjusting an affixed laser beam axis and maintaining the affixed laser beam axis parallel to a mechanical axis of the laser beam alignment assembly;
• setting a pre-compression force along with the first axis and the second axis of the laser beam alignment assembly, using a plurality of translation setscrews, a corresponding plurality of motion springs of the translation setscrews with opposing motions and spring retainers;
• and
• mechanically nesting an inner motion plane of the laser beam alignment device and an outer motion plane of the laser beam alignment device together into the main housing by corresponding machined surfaces, such that each of the inner and outer motion planes operates in a fixed orientation that is 90 degrees apart relative to a single plane normal to an optical axis of the laser beam alignment assembly.