Year: 2025
Type: article
Abstract: A waveguide-based optical parametric oscillator for coherent Raman scattering applications is presented, exploiting four-wave mixing in a silicon nitride waveguide. Benefiting from its long propagation length of 20 mm in combination with a narrowband pump laser, idler pulses with an energy of up to 210 pJ and a spectral bandwidth down to 11.2 $$\hbox {cm}^{-1}$$ cm - 1 were obtained. By combining these narrowband idler pulses and the residual pump pulses, coherent Raman spectroscopy and microscopy were possible with a signal-to-noise ratio of up to 13.4. Thus, the presented compact and stable waveguide-based light source paves the way towards integrated lab-on-a-chip coherent Raman applications.
Source: Applied Physics B
Institution: University of Münster
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,090
OpenAlex ID: W4407214123