This article is cited in 10 papers

Brief Communications

Emission of λ ≈ 2 μ stimulated radiation by holmium in aluminum holmium garnet crystals

A. O. Ivanov, I. V. Mochalov, A. M. Tkachuk, V. A. Fedorov, P. P. Feofilov


Abstract: Stimulated emission was obtained from Ho³⁺ ions (⁵I₇→⁵I₈ transition) in a new single-component self-activated system with aluminum holmium garnet crystals grown by the Czochralski method. The thresholds of the λ= 2.129 and 2.122 laser emission at 90 °K were 9 and 14 J/cm, respectively. The absorption and luminescence spectra were used in the derivation of the Stark splitting scheme of the ⁵I₇ and ⁵I₈ terms. The lifetime of the ⁵I₇ term was determined (τ ≈ 10 msec).

UDC: 548.0-535.35

PACS: 42.70.Hj, 78.45.+h, 78.55.Hx, 81.10.Fq

Received: 28.05.1974
Revised: 28.08.1974

 English version: Soviet Journal of Quantum Electronics, 1975, 5:1, 115–116