A. Yu. Kanaev, A. L. Koromyslov, K. V. Lopukhin, I. M. Tupitsyn, E. A. Cheshev, “Fabrication and study of generation characteristics of monolithic ceramic microchip Nd3+:YAG/Cr4+:YAG lasers”, Kvantovaya Elektronika, 2023, Volume 53, Number 9,Pages 684

Lasers

Fabrication and study of generation characteristics of monolithic ceramic microchip Nd³⁺:YAG/Cr⁴⁺:YAG lasers

A. Yu. Kanaev^a, A. L. Koromyslov^a, K. V. Lopukhin^b, I. M. Tupitsyn^a, E. A. Cheshev^a

^a Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
^b Fryazino Branch, Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Fryazino, Moscow oblast, Russia

Abstract: The characteristics of monolithic ceramic Nd³⁺:YAG/Cr⁴⁺:YAG chip lasers are investigated and their fabrication technology is presented. Only CaO/MgO (without SiO₂) were used as sintering aids. The conversion of Cr³⁺ ions to Cr⁴⁺ ions was 2.19 to 2.43% in different specimens. The thickness of the transition region between Nd³⁺:YAG and Cr⁴⁺:YAG was up to 400 μm. Laser generation of pulses with an energy of up to 200 μJ and duration of up to 0.9 ns at a repetition rate of 7.5 kHz was produced.

Keywords: laser ceramics, sintering aids, chip lasers, composite elements.

Received: 03.10.2023
Revised: 08.11.2023
Accepted: 08.11.2023