A method of detecting a laser beam emitted by a laser tool, the method comprising the following steps a) receiving light via an optical window of a receiver unit; b) directing the light received via the optical window onto a first light sensor array and a second light sensor array, the first and the second light sensor arrays being arranged adjacent to each other within a housing; c) outputting at least one signal from the first light sensor array indicating a characteristic of the light incident upon the first light sensor array; d) outputting at least one signal from the second light sensor array indicating a characteristic of the light incident upon the second light sensor array; e) processing the at least one signal from the first light sensor array and the at least one signal from the second light sensor array with respect to each other to produce a measurement signal; f) determining whether the received light is a laser beam emitted by the laser tool based on the measurement signal; g) directing the at least one signal from the first light sensor array to a first multiple linear stage peak amplifier, each respective amplifier stage of the first multiple linear stage amplifier outputting an amplified first signal with a predetermined gain; h) directing the at least one signal from the second light sensor array to a second multiple linear stage peak amplifier, each respective amplifier stage of the second multiple linear stage amplifier outputting an amplified second signal with a predetermined gain; i) processing the amplified first signals and the amplified second signals with respect to each other to produce a measurement signal for each amplifier stage of the first and the second multiple linear stage amplifiers; j) selecting the measurement signal from the amplifier stage having the highest signal-to-noise ratio; and k) determining whether the received light is a laser beam emitted by the laser tool based on the selected measurement signal; and scaling a bandwidth of the selected measurement signal based on the amplifier stage of the selected measurement signal. a) receiving light via an optical window of a receiver unit; b) directing the light received via the optical window onto a first light sensor array and a second light sensor array, the first and the second light sensor arrays being arranged adjacent to each other within a housing; c) outputting at least one signal from the first light sensor array indicating a characteristic of the light incident upon the first light sensor array; d) outputting at least one signal from the second light sensor array indicating a characteristic of the light incident upon the second light sensor array; e) processing the at least one signal from the first light sensor array and the at least one signal from the second light sensor array with respect to each other to produce a measurement signal; f) determining whether the received light is a laser beam emitted by the laser tool based on the measurement signal; g) directing the at least one signal from the first light sensor array to a first multiple linear stage peak amplifier, each respective amplifier stage of the first multiple linear stage amplifier outputting an amplified first signal with a predetermined gain; h) directing the at least one signal from the second light sensor array to a second multiple linear stage peak amplifier, each respective amplifier stage of the second multiple linear stage amplifier outputting an amplified second signal with a predetermined gain; i) processing the amplified first signals and the amplified second signals with respect to each other to produce a measurement signal for each amplifier stage of the first and the second multiple linear stage amplifiers; j) selecting the measurement signal from the amplifier stage having the highest signal-to-noise ratio; and k) determining whether the received light is a laser beam emitted by the laser tool based on the selected measurement signal; and