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Development of a compact high-performance midwave infrared laser

An efficient, pulsed, solid-state, mid-wave infrared laser source has been designed and demonstrated that emits close to 4 micrometers . The pump laser was a diode-pumped neodymium- doped yttrium aluminum garnet slab. Periodically-poled lithium niobate provided the non-linear conversion in an optical parametric oscillator in a direct conversion from the pump source. An acousto-optical Q-switch was used for generating short-duration, high-intensity pulses. Modulated waveforms are possible via direct modulation of the diode sources.