As imaging devices push deeper into the short-wave infrared (SWIR) spectrum, material consistency is what separates good performance from great performance.
At Quantum Science, we define this reliability through ‘Quality+’. This is a scientific framework for precision manufacturing that ensures every batch of our PbS quantum dots (QDs) delivers identical optical and physical characteristics. It is the foundation through which we guarantee reproducible performance for SWIR integration at both research and industrial scales.
1. Precision at critical wavelengths
The 1,530–1,550 nm wavelength range is increasingly important for emerging SWIR sensors. This region offers a sweet spot for balanced sensitivity and signal-to-noise performance, while also benefiting from a clean atmospheric transmission window that enables improved imaging range and contrast. In addition, it aligns with the mature telecom ecosystem, where well-established, cost-effective components and high-power, eye-safe illumination sources are readily available.
However, creating QD materials that can maintain tight optical control in this spectral band is no simple task. Success requires exacting control over nanocrystal size, composition, and surface passivation. Even minor variations can shift the absorption wavelength and degrade device performance.
Quantum Science’s INFIQ® PbS QDs are engineered to eliminate that variability. Through our patented synthesis process we achieve exceptional monodispersity, delivering tightly controlled optical properties and highly consistent wavelength response. This ensures stable sensor output, even in highly demanding optical architectures.
2. Repeatability as standard
While early SWIR research focused on innovation, repeatability now defines a successful material. For commercial sensor manufacturing, such inconsistencies are unacceptable. As sensor makers move from prototypes to mass production, materials must deliver the same performance every single time.
Our Quality+ framework was established to serve this exact requirement. Every step of our production process is tailored to guarantee identical outcomes, resulting in PbS QDs that deliver the same spectral signature and same reliability, batch after batch.
3. Built for scalable manufacturing
Achieving lab-grade quality is one thing but maintaining it at industrial volumes is another. Many QD suppliers may struggle to scale their operations without compromising product consistency.
Our PbS QD platform is designed for manufacturability. Proprietary precursor chemistry and continuous monitoring allow stable quality retention from pilot to full production scales. The outcome is consistent material performance compatible with automated deposition, coating, and encapsulation processes commonly used in SWIR device fabrication.
4. Proven optical and structural stability
Device lifetimes increasingly depend on materials capable of withstanding environmental and operational stress without spectral drift or structural degradation. Through controlled surface chemistry and advanced encapsulation, our PbS QDs retain optical stability over extended operational periods and under varying temperature or humidity conditions.
This long-term stability not only supports sensor reliability but also simplifies downstream integration by reducing recalibration cycles and lifetime maintenance costs. At the same time, we continue to advance our materials to further enhance stability, with ongoing developments aimed at achieving next-generation reliability standards for SWIR technologies.
5. Collaboration that drives technical progress
Each generation of SWIR systems demands materials tailored to new optical stacks, detector architectures, and manufacturing requirements. Quantum Science maintains close collaboration with global sensor and component developers to ensure that our INFIQ® quantum dots evolve in alignment with device innovation.
Through these partnerships, we provide materials validated under real application conditions, supporting engineering teams with consistent spectral response and verified reliability.
Setting the standard for SWIR quality
Quality+ is our promise to the industry. It is a pledge to deliver stability, reliability, and performance at scale. It’s a commitment to perfecting the synthesis and repeatability of PbS QDs in the 1,530-1,550nm range, and to delivering the optical integrity that SWIR imaging demands.
For more information, contact the Quantum Science team.