Related Experiment Video
Updated: Feb 12, 2026

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition
Published on: August 29, 2017
Three-dimensional Dirac semimetal thin-film absorber for broadband pulse generation in the near-infrared
Abstract:
In this Letter, the transient nonlinear absorption of three-dimensional (3D) topological Dirac semimetal Cd3As2 thin film was characterized in the near-infrared band. By performing broadband pump-probe measurements, we experimentally proved that molecular beam epitaxy (MBE) grown Cd3As2 exhibits strong and tunable saturable absorption effects across 1-2 μm. By further inserting the Cd3As2 film into the cavities of Tm- and Er-doped fiber lasers, we obtained stable mode-locked operations at 1.96 and 1.56 μm. Our results experimentally establish that Cd3As2 is a promising broadband saturable absorber (SA) for pulsed lasers in the infrared range.
Related Concept Videos
Pulse
The pulse serves as a clinical...
Pulse
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
Pulse Oximetry
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
Regulation of Pulse
Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...

