The 1.5 μm frequency-stabilized laser seed source combines high-precision error signal extraction with feedback control to achieve stable output with frequency fluctuations below 1 MHz, meeting the requirements of precision measurement and high-coherence applications.
Noise Suppression Scheme
Error Signal Extraction Technology
Quantum Technology Fields
Precision Measurement Systems
Industrial Sensing Networks
| Technical Parameter | Unit | Technical Specification | ||
|---|---|---|---|---|
| Min | Typical | Max | ||
| Central Wavelength | nm | 1550 | ||
| Laser Mode | / | Single Longitudinal Mode, Continuous Wave | ||
| Output Power | mW | 20 | 30 | |
| Linewidth | kHz | 15 | 20 | 25 |
| Optical Signal-to-Noise Ratio | dB | 55 | ||
| Wavelength Drift (RMS @ 2h) | kHz | ±500 | ||
| Output Power Adjustment | % | 1–100 | ||
| Operating Temperature | °C | −10 | 45 | |
| Polarization Type | / | Linear Polarization | ||
| Polarization Extinction Ratio | dB | 20 | 21 | 23 |
| Operating Voltage | VDC | 12 | ||
| Output Fiber Type | / | PM1550 | ||
| Power Consumption | W | |||
The 1.0 µm ultra-low noise seed laser is engineered for high-end applications such as new energy laser driving, coherent photoradar, precision interferometry, and quantum optics. Utilizing advanced low-RIN laser technology paired with a highly stable power control architecture, it effectively suppresses noise accumulation within the system.
This ensures long-term power stability, extremely low intensity fluctuations, and enhanced detection sensitivity, significantly improving the overall accuracy and performance of related optical systems.
Ultra-Low Intensity Noise
Excellent Power Stability
Completely Independent Intellectual Property Rights
Quantum Communication
Distributed Fiber Sensing
Coherent Optical Measurement
The 1.5 μm ultra-low noise seed source features completely independent intellectual property rights and performance reaching an internationally leading level. It adopts an innovative combined optical and optoelectronic feedback noise suppression scheme, achieving intensity noise lower than −138 dB/Hz in the 1 MHz–100 MHz frequency range, and power stability better than 0.5% over 30 minutes.
Ultra-Low Intensity Noise
Excellent Power Stability
Completely Independent Intellectual Property Rights
Quantum Communication
Distributed Fiber Sensing
Coherent Optical Measurement
The 2.0 μm DBR (Distributed Bragg Reflector) single-frequency seed source is a high-performance laser device designed for applications requiring high coherence and low noise. It is widely used in quantum information, high-resolution spectroscopy, LiDAR, and nonlinear frequency conversion. Its core advantages include kHz-level narrow linewidth, wide-range mode-hop-free tuning, high-power amplification compatibility, and a compact, environmentally robust design.
kHz-Level Narrow Linewidth
Mode-Hop-Free Wide Tuning
High Power Stability
Compact Design
Gas Detection
Quantum Computing
Quantum Precision Measurement
The core enabling technology of the company’s 1.0 μm laser is highly doped specialty fiber. Based on this specialty fiber material, a centimeter-scale single-frequency laser resonator is constructed, enabling kilohertz-level spectral linewidth output while effectively preventing mode hopping.
Through optimized circuit design, the laser achieves high frequency stability and low intensity noise. In addition, the resonator incorporates special temperature-control protection and shock- and vibration-resistant design, ensuring stable operation even under harsh external environmental conditions.
Ultra-narrow linewidth
Mode-hop-free operation
No burst noise
High side-mode suppression ratio (SMSR)
Low relative intensity noise (RIN)
Excellent vibration resistance and wide operating temperature tolerance
Gravitational wave detection
Fiber optic sensing
Laser radar (LiDAR)
Coherent communication
