New highly efficient LGS-KhM erbium-doped glass for uncooled miniature lasers with a high pulse repetition rate

Highly efficient minilaser with transverse pulsed semiconductor pumping for eye-safe laser range-finding

“…We used in our work Cr, Yb, Er : glasses fabricated at the Institute of Radioengineering and Electronics, Russian Academy of Sciences, for êashlamp pumping [5,6]. Along with the main sensitiser Yb 3 , an additional sensitiser Cr 3 was introduced for a fuller utilisation of the radiation from the lamp.…”

“…The rate of reverse energy transfer in the Cr ë Yb pair increases with the concentration of chromium or ytterbium ions [6].…”

Heat dissipation accompanying lamp pumping in an erbium active element

“…The energy of the generated pulse is observed to fall off as the pulse-repetition rate increases, and this is associated with both an increase of the inverse transfer rate in the chromium-ytterbium pair as the temperature increases and the appearance of an optical wedge. 3 Erbium-glass lasers have recently been extensively introduced into medicine and cosmetology. To increase the rate and efficiency of the operations, the developers of laser apparatus intended for these purposes strive to obtain high output energy and acceptable pulse-repetition rate.…”