Compact multi-color flow cytometer

A method of flow cytometry with a flow cytometer, the method comprising:

• generating a first laser beam of a first wavelength with a first laser;
• receiving the first laser beam into a flow cell to strike and fluoresce cells in a fluidics stream, wherein the fluoresced cells scatter the first laser beam into fluorescent light;
• collecting the fluorescent light at one end of a first fiber assembly;
• receiving the fluorescent light from the opposite end of the first fiber assembly;
• dispersing the fluorescent light into a spectrally dispersed light towards a first receiver assembly having at least first eight parallel photodiodes in a first photodiode detector array to form at least first eight channels;
• receiving the spectrally dispersed light with the first photodiode detector array and generating a first plurality of current signals respectively with the at least first eight parallel photodiodes;
• receiving the first plurality of current signals with at least first eight trans-impedance amplifier circuits of the first receiver assembly;
• and
• generating a first plurality of output voltage signals with the at least first eight trans-impedance amplifier circuits.