Abstract

Terahertz (THz) NH₃ lasing with optical pumping by electron-beam-sustained discharge “long” (∼100 µs) CO₂ laser pulses was obtained. The NH₃ laser emission pulses and the “long” pulses of the CO₂ pump laser were simultaneously measured with nanosecond response time. The NH₃ lasing duration and its delay with respect to the pump pulse were measured for various CO₂ laser pulse energies. For the CO₂ laser pump line 9R(30), three wavelengths of 67.2, 83.8, and 88.9 µm were recorded. For the CO₂ laser pump line 9R(16), only a single NH₃ laser line with a wavelength of 90.4 µm was detected.

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