Influence of energy-transfer upconversion on the performance of high-power diode-end-pumped CW lasers

• Published in: IEEE journal of quantum electronics Vol. 36; no. 5; pp. 615 - 619
• Main Authors: Chen, Y.F., Lan, Y.P., Wang, S.C.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.2000; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Associate members; Crystals; Diode-pumped lasers; Diodes; Doped-insulator lasers and other solid state lasers; Equations; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Laser modes; Laser theory; Lasers; Lasers and electrooptics; Mathematical analysis; Mathematical models; Mirrors; Neodymium; Optics; Photonic crystals; Physics; Power generation; Quantum electronics; Upconversion; Ternary compounds; YAG laser; Theoretical study; Doped materials; Yttrium Vanadates; Experimental study; Solid state lasers; Neodymium additions; Rate equation; Diode pumping; End pumping; Energy transfer; Neodymium lasers
• ISSN: 0018-9197; 1558-1713
• DOI: 10.1109/3.842104

The influence of energy-transfer upconversion (ETU) on the performance of diode-end-pumped lasers is studied by including ETU effects into the space-dependent rate equations. The dependence of ETU rates on the mode-to-pump size ratio and on the output mirror transmission is derived. Experiments for Nd:YAG and Nd:YVO/sub 4/ crystals are performed to validate the present model. It is found that the ETU process increases the sensitivity of the output power to the output mirror transmission but its influence on the output power is not significant for low output transmission.