Abstract: Methods and systems for laser diode ignition of field cannons and weaponry. A series of one or more laser diodes or laser diode array, bars or stripes that are configured to optically pump a collimator which may be formed of materials to provide a lasing medium. The energy output of these devices can be combined when configured as an array or a series of redundant laser diodes assemblies to provide safe and reliable ignition systems. The collimator may direct the output from these laser diode assemblies as multiple collimated ignition beams. The laser diode assemblies may optically end pump and/or side pump the collimator or collimating rod to deliver a more directed energy output to artillery propellant. Additionally, the duration of the pulses may be controlled and extended as necessary to help ensure proper ignition of the propellant.