| Title |
Intracavity THz generation using a thin lithium niobate plate in a compact Kerr-lens mode-locked Yb:CALGO bulk oscillator |
| Authors |
Khalili, Mohsen ; Pimpė, Jokūbas ; Wang, Yicheng ; Vengelis, Julius ; Hasse, Kore ; Suntsov, Sergiy ; Kip, Detlef ; Saraceno, Clara Jody |
| DOI |
10.1007/s10762-026-01181-w |
| Full Text |
|
| Is Part of |
Journal of infrared, millimeter, and terahertz waves.. New York : Springer. 2026, vol. 47, art. no. 74, p. [1-14].. ISSN 1866-6892. eISSN 1866-6906 |
| Keywords [eng] |
terahertz generation ; optical rectification ; lithium niobate ; ultrafast laser ; intracavity nonlinear optics |
| Abstract [eng] |
We demonstrate intracavity terahertz (THz) generation via optical rectification in a 50-µm-thick lithium niobate crystal placed inside a compact diode-pumped Kerr-lens mode-locked (KLM) Yb:CALGO bulk oscillator. The oscillator operates at a repetition rate of 85 MHz and delivers 83-fs pulses with up to 71 W of average intracavity power, obtained with only 21.4 W of low-cost multimode diode pump power. We generate singlecycle THz pulses with a spectrum extending up to 3 THz, detected by electro-optic sampling with 60-dB dynamic range within 156 s of measurement time (313 averaged traces) and up to 120 µW of THz average power. This work combines the high damage threshold, power-handling capability, and cost-effectiveness of thin-LN plates with simplicity, compactness, and low-cost multimode diode-pumped solid-state bulk lasers, offering an attractive alternative for high-repetition-rate THz time-domain spectroscopy systems. |
| Published |
New York : Springer |
| Type |
Journal article |
| Language |
English |
| Publication date |
2026 |
| CC license |
|
