A5005776225- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Spectroscopy and Laser Applications
- Advanced Fiber Optic Sensors
- Ocular Infections and Treatments
ETH Zurich
2022-2024
Dual-comb spectroscopy (DCS) enables high-resolution measurements at high speeds without the trade-off between resolution and update rate inherent to mechanical delay scanning. However, complexity limited sensitivity remain significant challenges for DCS systems. We address these via a wavelength-tunable dual-comb optical parametric oscillator (OPO) combined with an up-conversion detection method. The OPO is tunable from 1300-1670 nm (signal) 2700-5000 (idler). Spatial multiplexing in both...
We present a novel detection scheme for high-sensitivity spectroscopy in the mid-infrared. use low-noise and low-complexity dual-comb source based on PPLN OPO an Yb:YAG pump. Both laser are spatially-multiplexed single-cavity sources. At repetition rate of 250 MHz ps-long pump pulses, high power per comb line >120 W is achieved at 3000 nm (idler). The idler tunable from 2700 to 5170 nm. system enables comb-line-resolved measurements free-running operation. With our scheme, we achieve...
We demonstrate a spatially-multiplexed dual-comb 250-MHz OPO from single linear cavity. The adjustable repetition-rate difference is 4.1 kHz. Each idler comb has >200-mW average power at 3.5 μm with 30 nm bandwidth. wavelength-tunable 1.36 to 1.7 and 2.9 4.17 μm. © 2022 Author(s)