Single Mode Red 638nm 0.2mW Fiber-Coupled Laser Module for Medical Blood Detection

This Single Mode Red 638nm 0.2mW Fiber-Coupled Laser Module is a medical-grade core component exclusively engineered for medical blood detection systems. It integrates 638nm red laser’s blood component-selective absorption, single-mode fiber’s precision transmission, and 0.2mW low-power safety design to deliver stable, accurate optical signals for blood analysis—becoming an ideal choice for blood glucose monitoring, hemoglobin concentration measurement, blood oxygen saturation (SpO₂) detection, and hematology analyzers.

Core Technical Advantages for Medical Blood Detection

638nm Wavelength Optimization for Blood Components: The 638nm red wavelength aligns with the absorption peaks of key blood components (hemoglobin, oxyhemoglobin, deoxyhemoglobin) and avoids interference from plasma proteins. It enables precise differentiation between oxygenated and deoxygenated hemoglobin, supporting accurate calculation of blood oxygen saturation and hemoglobin concentration—critical for non-invasive or minimally invasive medical blood detection.

Single-Mode Fiber-Coupled Precision Transmission: Equipped with medical-grade single-mode silica fiber (core diameter 4.5μm, numerical aperture NA=0.14), it delivers a diffraction-limited laser beam with ultra-narrow divergence. The single-mode design eliminates beam dispersion, for precise interaction with blood samples—avoiding cross-interference between adjacent detection channels.

0.2mW Low-Power Safety & Stability: With stable CW output (power fluctuation ≤±2%), the 0.2mW low power meets IEC 60825-1 Class 1 safety standards (eye-safe and non-damaging to blood cells). It prevents thermal denaturation of blood components during detection, ensuring the integrity of sample data while supporting 24/7 continuous operation (service life >10,000 hours) for high-throughput blood analysis equipment.