Abstract

Characteristics of intracavity frequency doubling of a diode-pump cesium vapor laser (Cs-DPAL) are studied in detail utilizing the rate equations theory. For intracavity frequency doubling of Cs-DPAL, very long nonlinear crystals such as LiB₃O₅ (LBO) and BiB₃O₆ (BIBO) with a relatively small effective nonlinear coefficient are required to get the maximum second harmonic (SH) power, and periodically poled crystals such as periodically poled KTiOPO₄ (ppKTP) are promising. The reason for this phenomenon is that the simulated emission section is much higher, although it is favorable to reduce the laser threshold. For intracavity frequency doubling of Cs-DPAL in the quasi-two-level limit, the optimal length of nonlinear crystal is slightly shorter than the Cs-DPAL with the assumption of a very rapid transition from the $6{{}^2\mathrm{P}}_{3/2}$ to $6{{}^2\mathrm{P}}_{1/2}$ levels, and a qualitative interpretation is given. The SH power by intracavity frequency doubling of Cs-DPAL is also limited by the relatively slower collisional transfer rate from the $6{{}^2\mathrm{P}}_{3/2}$ to $6{{}^2\mathrm{P}}_{1/2}$ levels for higher pump power intensity.

© 2016 Optical Society of America

Theoretical analysis of self-frequency doubling in a high-power longitudinally diode-pumped Nd:YCOB laser

Shi-bo Dai, Nan Zong, Feng Yang, Yu Shen, Zhi-min Wang, Feng-feng Zhang, Da-fu Cui, Qin-jun Peng, and Zu-yan Xu
J. Opt. Soc. Am. B 33(6) 1169-1176 (2016)

All-solid-state continuous-wave frequency-doubled Nd:YAG–BiBO laser with 2.8-W output power at 473 nm

C. Czeranowsky, E. Heumann, and G. Huber
Opt. Lett. 28(6) 432-434 (2003)

Frequency-doubling of a high power cesium vapor laser using a PPKTP crystal

B. V. Zhdanov, Yalin Lu, M. K. Shaffer, W. Miller, D. Wright, and R. J. Knize
Opt. Express 16(22) 17585-17590 (2008)

Stable single-mode operation of intracavity-doubled diode-pumped Nd:YVO₄ lasers: theoretical study

Sten Helmfrid and Kimio Tatsuno
J. Opt. Soc. Am. B 11(3) 436-445 (1994)

Observation of strong cascaded Kerr-lens dynamics in an optimally-coupled cw intracavity frequency-doubled Nd:YLF ring laser

Jean-Jacques Zondy, Fabiola A. Camargo, Thomas Zanon, Valentin Petrov, and Niklaus U. Wetter
Opt. Express 18(5) 4796-4815 (2010)