Abstract:
A new variant of the active medium capable of ensuring tunable inversionless generation and/or amplification of electromagnetic radiation in the far-IR and terahertz range is proposed and characterized. The medium is based on a comparatively simple semiconductor nanoheterostructure with quantum wells, which is capable of operating in a pulsed regime at room temperature. A severalfold change in the working frequency of the amplifier/generator can be achieved by varying the pumping radiation intensity. The proposed amplifier/generator (laser) can serve as a convenient, cheap and compact tunable source of far-IR and terahertz radiation for various technical and medical applications.
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