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Laser oscillator based on Cr2+:CdSe single crystal pumped by radiation of Tm3+:Lu2O3-ceramic laser was created and investigated. Repetitively-pulsed oscillations at the wavelength of 2.92 μm with bandwidth of 80 nm were demonstrated. The output power was up to 3W at 15–30 kHz repetition rate with the pulse duration of ∼40–300 ns in the good-quality beam.
The mid-IR cw tunable solid state two-mode Cr2+:ZnSe laser with intracavity methane cryocell was developed. The laser was applied for sub-Doppler spectroscopy of (υ1+υ4) vibrational-rotational band of methane and observation of narrow resonances of saturated dispersion at λ = 2.36 µm. The new technique of low pressure methane gas cooling was used instead of liquid nitrogen “jacket” design applied...
As high as 2.7 J of output energy at 3600 nm with 44% absorbed pump energy slope efficiency was demonstrated from Fe:ZnS laser operating at 85 K. With an intracavity prism, the Fe:ZnS laser was tuned from 3450 to 4150 nm.
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