Output characteristics of Nd:GdVO4 crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers

Lin, Hong-Yi; Xiong, Feibing

doi:10.1007/s11801-015-4163-6

Optoelectron. Lett.

2015

DOI: 10.1007/s11801-015-4163-6

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Output characteristics of Nd:GdVO4 crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers

Hong-Yi Lin

Feibing Xiong

Abstract: The output characteristics of neodymium-doped gadolinium vanadate (Nd:GdVO 4 ) crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers are investigated. With two 1 W semiconductor diode lasers pumping, the output power of TEM 00 laser is 920 mW, and the optical conversion efficiency is close to 46%. By changing the relative orientations of both Nd:GdVO 4 crystals, the polarization characteristics of laser are varied. In particular, by keeping the c-axes of two Nd:GdVO 4 cr… Show more

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2017

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Mode filling factor of a laser with end-pumped configuration

Han

Wang

et al. 2017

Journal of Laser Applications

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The mode filling factor is an important parameter especially in designing an end-pumped laser system. Although the end-pumped structure has been used for several decades, an overlap coefficient is often confused by many laser technicians. So far, there have usually been several conventional expressions using different formulae. A researcher often puzzles by some problems such as “which equation is a suitable one” and “how accurate the equation is.” Thus, it is necessary to construct a precise theory to systematically analyze the mode filling factor and investigate the difference among several traditional repressions. In this paper, an analytical model is first developed to study the mode filling factor for a pump beam and a laser beam with the modes in any order numbers. Then, several cases are discussed in which a pump beam and a laser beam are with a fundamental mode and a high-order mode as well as a hybrid mode, respectively. It has been demonstrated that the nonignorable deviation in the mode filling factor will occur if the conventional expression for both the pump and laser beams with fundamental modes is used to describe the case in which the pump and laser beams are with high-order transverse-modes. Similar analyses have been rare so far to the best of our knowledge. The theoretical conclusion in this paper is thought to be valuable in the design of an end-pumped laser system.

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Mode filling factor of a laser with end-pumped configuration

Han

Wang

et al. 2017

Journal of Laser Applications

View full text Add to dashboard Cite

show abstract

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Output characteristics of Nd:GdVO4 crystals laser with dual c-axis orthogonal gains end-pumped by two fiber-coupled diode lasers

Cited by 1 publication

References 11 publications

Mode filling factor of a laser with end-pumped configuration

Mode filling factor of a laser with end-pumped configuration

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