Nanodiamond-Enabled Passively Q-Switched Solid-State Laser Operating at 2 μm
- 1Xinjiang Key Laboratory for Luminescence Minerals and Optical Functional Materials, School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, China
Abstract
This work demonstrates a passively Q-switched (PQS) Tm:YAlO3 (Tm:YAP) laser at 2 μm employing a nanodiamond (ND) saturable absorber (SA). Microstructural analysis indicates that the spin-coated ND film exhibits spherical grains and forms effective interfacial contact with the CaF2 substrate. Employing a 5%-transmittance output coupler (OC), the ND-based SA facilitated the generation of a PQS laser. Key performance metrics include: an average output power of 367.7 mW at an absorbed pump power of 9.66 W, and a central wavelength of 1931.2 nm. Moreover, stable pulse trains exhibited a minimum pulse duration of 376.9 ns at a repetition rate of 86.27 kHz, setting a record for the shortest pulse width ever reported for ND-based PQS lasers. Under the same conditions, the beam quality factors were measured as M 2 x = 1.02 and M 2 y = 1.08. These results confirm that ND serves as an excellent modulator, showing great potential for mid-infrared pulsed laser applications.
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BibTeX
@article{meng2026nanodiamondenabled,
title = {{Nanodiamond-Enabled Passively Q-Switched Solid-State Laser Operating at 2 μm}},
author = {Zhe Meng and Yang Zhang and Haoyang Tang and Yuejin Jiang and Zhaoxue Li and Xining Yang and Sujian Niu},
journal = {Nanomaterials},
year = {2026},
month = oct,
doi = {10.3390/nano16201313},
url = {https://www.mdpi.com/2079-4991/16/20/1313},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Nanodiamond-Enabled Passively Q-Switched Solid-State Laser Operating at 2 μm
AU - Zhe Meng
AU - Yang Zhang
AU - Haoyang Tang
AU - Yuejin Jiang
AU - Zhaoxue Li
AU - Xining Yang
AU - Sujian Niu
PY - 2026
DA - 2026/10/17
JO - Nanomaterials
DO - 10.3390/nano16201313
UR - https://www.mdpi.com/2079-4991/16/20/1313
AB - This work demonstrates a passively Q-switched (PQS) Tm:YAlO3 (Tm:YAP) laser at 2 μm employing a nanodiamond (ND) saturable absorber (SA). Microstructural analysis indicates that the spin-coated ND film exhibits spherical grains and forms effective interfacial contact with the CaF2 substrate. Employing a 5%-transmittance output coupler (OC), the ND-based SA facilitated the generation of a PQS laser. Key performance metrics include: an average output power of 367.7 mW at an absorbed pump power of 9.66 W, and a central wavelength of 1931.2 nm. Moreover, stable pulse trains exhibited a minimum pulse duration of 376.9 ns at a repetition rate of 86.27 kHz, setting a record for the shortest pulse width ever reported for ND-based PQS lasers. Under the same conditions, the beam quality factors were measured as M 2 x = 1.02 and M 2 y = 1.08. These results confirm that ND serves as an excellent modulator, showing great potential for mid-infrared pulsed laser applications.
SN - 2079-4991
ER -