A method of generating pulsed coherent radiation, comprises the step of generating high harmonic pulses by an interaction of laser light pulses with a non-linear medium contained in a resonant cavity, wherein the non-linear medium is arranged in an environment of reduced pressure. A connector receives the pulses from the pulse generator and supplies them to the group of series-connected miniature decorative bulbs. Pressure within the chamber is decreased. A connector at the rear side of the data transfer cartridge communicates with the serial port at the front side, and mates with a connector in the tape drive when the data transfer cartridge is inserted therein. The invention additionally provides a method for analyzing the concentration of fructosamine in less than or equal to five minutes without the use of a reaction accelerator.