A Roadmap to Interstellar Flight

This is an automatic summary, original reduced by 98%.

The photon driver is a laser phased array which eliminates the need to develop one extremely large laser and replaces it with a large number of modest laser amplifiers that are inherently phase locked as they are fed by a common seed laser.

P0 = laser thrust on payload with laser power P0 with sail reflection r c while laser spot is smaller than sail F where r 0 for no reflection and 1 for complete reflection.

Preliminary System Design: Directed energy systems are ubiquitous, used throughout science and industry to melt or vaporize solid objects, such as for laser welding & cutting, as well as in defense.

While the largest sized systems are required for interstellar missions, small systems have immediate use for roadmap development and applications such as sending small probes into the solar system and then working our way outward as larger laser arrays are built.

The solar system larger dust grains have a lower density 10-12 /m3 and thus the total number of solar system hits for the larger solar system grains would be very low on average.

37x104"g" 10g - multiple wafer scale systems with 2.7m reflector Time to when laser diffraction spot equals reflector size= 1050s Distance when laser diffraction spot equals reflector size=1.

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