Publications by authors named "Sarper Salman"
Article Synopsis
- Frequency combs are powerful tools for precise and quick molecular spectroscopy, often created using difference frequency generation (DFG) from near-infrared sources, but measuring their coherence properties has been underexplored.
- This study focuses on a Raman-soliton based DFG source powered by a Yb:fiber comb, measuring coherence through a heterodyne beat between DFG and Tm:fiber frequency combs.
- Results show a sub-Hz relative linewidth between the two combs, and a new locking mechanism using interferometry is introduced for stabilizing intensity noise over long periods.
We demonstrate a 41.6 MHz, 1.3 ps, 140 pJ Ho:fiber oscillator using a nonlinear amplifying loop mirror (NALM) as saturable absorber.
View Article and Find Full Text PDFWe present a flexible all-polarization-maintaining (PM) mode-locked ytterbium (Yb):fiber laser based on a nonlinear amplifying loop mirror (NALM). In addition to providing detailed design considerations, we discuss the different operation regimes accessible by this versatile laser architecture and experimentally analyze five representative mode-locking states. These five states were obtained in a 78-MHz configuration at different intracavity group delay dispersion (GDD) values ranging from anomalous (-0.
View Article and Find Full Text PDFPhotoacoustic imaging is based on the detection of generated acoustic waves through thermal expansion of tissue illuminated by short laser pulses. Fiber lasers as an excitation source for photoacoustic imaging have recently been preferred for their high repetition frequencies. Here, we report a unique fiber laser developed specifically for multiwavelength photoacoustic microscopy system.
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