Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Feature Issues

Comparison of thermal lensing effects between single-end and double-end diffusion-bonded Nd:YVO4 crystals for 4F3/2→4I11/2 and 4F3/2→4I13/2 transitions

Y. T. Chang, Y. P. Huang, K. W. Su, and Y. F. Chen

Open Access Open Access

Abstract

The effective focal lengths of thermal lens in diode-end-pumped continuous-wave Nd:YVO4 lasers for the 4F3/2→ 4I11/2 and 4F3/2→ 4I13/2 transitions were determined. The experimental results revealed that the thermal lensing effect for the 4F3/2→ 4I11/2 transition can be sufficiently improved by employing a single-end diffusion-bonded Nd:YVO4 crystal replacing a conventional Nd:YVO4 crystal. However, using a double-end diffusion-bonded Nd:YVO4 crystal was a great improvement over a single-end diffusion-bonded Nd:YVO4 crystal for the 4F3/2→ 4I13/2 transition with stronger thermal lensing effect.

©2008 Optical Society of America

Full Article  |  PDF Article
More Like This
Compact efficient Q-switched eye-safe laser at 1525 nm with a double-end diffusion-bonded Nd:YVO4 crystal as a self-Raman medium

Y. T. Chang, K. W. Su, H. L. Chang, and Y. F. Chen
Opt. Express 17(6) 4330-4335 (2009)

Double-end-pumped 11-W Nd:YVO4 cw laser at 1342 nm

Ai-Yun Yao, Wei Hou, Yu-Peng Kong, Lin Guo, Ling-An Wu, Rui-Ning Li, Da-Fu Cui, Zu-Yan Xu, Yong Bi, and Yi Zhou
J. Opt. Soc. Am. B 22(10) 2129-2133 (2005)

Efficient diode double-end-pumped Nd:YVO4 laser operating at 1342nm

Hamish Ogilvy, Michael J. Withford, Peter Dekker, and James A. Piper
Opt. Express 11(19) 2411-2415 (2003)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (5)
Fig. 1.
Fig. 1. Experimental setup of a diode-end-pumped Nd:YVO4 CW laser for measuring the effective focal length of thermal lens in the laser crystal.

Download Full Size | PDF

Fig. 2.
Fig. 2. The three types of laser crystal with different structures. (a) Conventional Nd:YVO4 crystal. (b) Diffusion-bonded Nd:YVO4 crystal with single-end at its pumped facet (YVO4-Nd:YVO4). (c) Diffusion-bonded Nd:YVO4 crystal with double-end (YVO4-Nd:YVO4-YVO4)

Download Full Size | PDF

Fig. 3.
Fig. 3. Experimentally measured average CW output power of 1064 nm with respect to the cavity length for the three types of Nd:YVO4 laser crystal with an input pump power (a) Pin=10.4W (b) Pin=20.2W. The arrows indicate the locations of critical cavity length.

Download Full Size | PDF

Fig. 4.
Fig. 4. Experimentally measured average CW output power of 1342 nm with respect to the cavity length for the three types of Nd:YVO4 laser crystal with an input pump power (a) Pin=7.61W (b) Pin=16.4W. The arrows indicate the locations of critical cavity length.

Download Full Size | PDF

Fig. 5.
Fig. 5. The relationship between the effective focal length of thermal lens and the input pump power for three types of Nd:YVO4 crystal operated at (a) 1064 (b) 1342 nm. The symbols represent experimental data and the curves are theoretical fitted results.

Download Full Size | PDF

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

1 f th = 1 d 2 + l ( 1 n − 1 ) − 1 r − d 1
f th = π K ω p 2 ξ P in ( dn ⁄ dT ) [ 1 1 − exp ( − α l a ) = C ω p 2 P in ]
α = 2 · N d ( mm − 1 )

Metrics

Select as filters
Select Topics Cancel
Top
       
© Copyright 2023 | Optica Publishing Group. All Rights Reserved
Privacy | Terms of Use