A pulse detector amplifier comprising: a mirror fast trigger comprising a trigger node and controlling a mirrored switching leg in response to a signal at the trigger node; a detection switching leg configured to receive an input energy pulse and trigger the trigger node; and the mirrored switching leg connected to an output node and controlling at least one of a voltage or a current on the output node; wherein each of the switching legs comprises one-half of a current mirror, which, when combined in electrical communication, forms a current mirror amplifier, wherein the mirror fast trigger comprises a trigger amplifier comprising a FET having a gate, a source, and a drain, and a trigger current source connected to the source of the trigger amplifier and the trigger node; wherein the detection switching leg comprises, connected in series, a detector for detecting said input energy pulse, an upper amplifier, and a detection switching leg current source; wherein the mirrored switching leg comprises, connected in series, a reference voltage source, a mirrored amplifier being a mirror of, and connected, at a control electrode thereof, to the trigger node and a control electrode of the upper amplifier of the detection switching leg; a mirrored current source being a mirror of, and connected, at a control electrode thereof, to the detection switching leg current source, and an output leg current source; wherein the junction of the detector and the upper amplifier is connected to the gate of the trigger amplifier; and wherein the junction of the mirrored current source and the output leg current source is connected to the output node. a mirror fast trigger comprising a trigger node and controlling a mirrored switching leg in response to a signal at the trigger node; a detection switching leg configured to receive an input energy pulse and trigger the trigger node; and the mirrored switching leg connected to an output node and controlling at least one of a voltage or a current on the output node; wherein each of the switching legs comprises one-half of a current mirror, which, when combined in electrical communication, forms a current mirror amplifier, wherein the mirror fast trigger comprises a trigger amplifier comprising a FET having a gate, a source, and a drain, and a trigger current source connected to the source of the trigger amplifier and the trigger node; wherein the detection switching leg comprises, connected in series, a detector for detecting said input energy pulse, an upper amplifier, and a detection switching leg current source; wherein the mirrored switching leg comprises, connected in series, a reference voltage source, a mirrored amplifier being a mirror of, and connected, at a control electrode thereof, to the trigger node and a control electrode of the upper amplifier of the detection switching leg; a mirrored current source being a mirror of, and connected, at a control electrode thereof, to the detection switching leg current source, and an output leg current source; wherein the junction of the detector and the upper amplifier is connected to the gate of the trigger amplifier; and wherein the junction of the mirrored current source and the output leg current source is connected to the output node. each of the switching legs comprises one-half of a current mirror, which, when combined in electrical communication, forms a current mirror amplifier, wherein the mirror fast trigger comprises a trigger amplifier comprising a FET having a gate, a source, and a drain, and a trigger current source connected to the source of the trigger amplifier and the trigger node; wherein the detection switching leg comprises, connected in series, a detector for detecting said input energy pulse, an upper amplifier, and a detection switching leg current source; wherein the mirrored switching leg comprises, connected in series, a reference voltage source, a mirrored amplifier being a mirror of, and connected, at a control electrode thereof, to the trigger node and a control electrode of the upper amplifier of the detection switching leg; a mirrored current source being a mirror of, and connected, at a control electrode thereof, to the detection switching leg current source, and an output leg current source; wherein the junction of the detector and the upper amplifier is connected to the gate of the trigger amplifier; and wherein the junction of the mirrored current source and the output leg current source is connected to the output node.