Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

High-power continuous-wave mid-infrared difference-frequency generation in the presence of thermal effects

Not Accessible

Your library or personal account may give you access

Abstract

We report performance studies of high-power, continuous-wave (cw), mid-infrared (mid-IR) difference-frequency generation (DFG) in MgO:PPLN at 2262 nm based on a narrowband Yb-fiber laser as pump and a Tm-fiber laser as signal source. Using a 50-mm-long crystal, we generate as much as 3.84 W of DFG output power at a single-pass conversion efficiency up to 0.57%/W, with a passive power stability better than 0.53% rms and passive spectral stability better than 0.01% over 1 h. The DFG beam also exhibits excellent spatial beam quality in ${{\rm{TEM}}_{00}}$ mode profile with ${M^2} \lt {1.2}$, and a beam pointing stability better than 16 µrad over ${\gt}\!{{1}}\;{\rm{h}}$. Simulations based on focused Gaussian beam theory provide an accurate estimate of the generated DFG output power and confirm thermal effects. Detailed thermal analysis indicates the role of linear absorption at the interacting wavelengths in local heating within the focal volume of the MgO:PPLN crystal. To the best of our knowledge, this is the highest cw DFG output power and conversion efficiency achieved in bulk MgO:PPLN in the mid-IR.

© 2021 Optical Society of America

Full Article  |  PDF Article
More Like This
Yb-fiber-pumped, high-beam-quality, idler-resonant mid-infrared picosecond optical parametric oscillator

S. Parsa, S. Chaitanya Kumar, Biplob Nandy, and M. Ebrahim-Zadeh
Opt. Express 27(18) 25436-25444 (2019)

Tunable high-average-power optical parametric oscillators near 2  μm

Biplob Nandy, S. Chaitanya Kumar, J. Canals Casals, Hanyu Ye, and M. Ebrahim-Zadeh
J. Opt. Soc. Am. B 35(12) C57-C67 (2018)

Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved