20W High Power 780-1080nm Faraday Rotating Mirror
Kerns Technology is a premier manufacturer of high-power optical components in China. We offer extensive options aligned with your ideal features, specifications, and needs. We can custom the high-power Faraday Rotating Mirror you require.
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Product Description
Product Description
The Kerns Technology 20W High Power 780-1080nm Faraday Rotating Mirror (FRM) is a TGG-crystal core optical component engineered for extreme industrial and R&D laser systems. Unlike standard FRMs, its TGG material ensures superior thermal stability and power handling capacity, operating across 780-1080nm (key wavelengths: 780/980/1030/1064nm) with ±5nm bandwidth.
It delivers a precision 45° polarization rotation (±3° tolerance) for reflected light, enabling non-reciprocal light control to shield laser sources from back-reflection damage. With a rugged 58×28×26mm package, it supports 20W continuous-wave power (0.5W-20W customizable) and 10kW peak pulse power (ns-level), paired with 1.0dB max insertion loss (0.3dB higher with connectors) and 20dB min extinction ratio (PM fiber type). Its dual-axis alignment design ensures stable performance across -5~+70°C, making it ideal for high-gain fiber amplifiers and industrial laser processing setups
Specification Table
| Parameter | Unit | Value |
|---|---|---|
| Center Wavelength | nm | 1064, 1030, 980, 850, 808, 780 |
| Operating Wavelength Bandwidth | nm | ±5 |
| Maximum Insertion Loss | dB | 1.0 (0.3dB higher with connectors) |
| CWL Faraday Rotation Angle | deg | 45 |
| Maximum Rotation Angle Tolerance | deg | ±3 |
| Minimum Extinction Ratio @23°C (PM Fiber Type) | dB | 20 (2dB lower with connectors) |
| Maximum Polarization-Dependent Loss @23°C (Single-Mode Fiber Type) | dB | 0.15 |
| Maximum Polarization Mode Dispersion | ps | 0.05 |
| Maximum Continuous-Wave Power | W | 0.5, 1, 5, 10, 20 (or Custom) |
| Maximum Peak Power (ns Pulses) | kW | 10 (or Custom) |
| Package Dimensions | mm | 58×28×26 |
| Maximum Tensile Load | N | 5 |
| Axis Alignment | - | Dual-Axis Operation |
| Operating Temperature | °C | -5~+70 |
| Storage Temperature | °C | -40~+85 |
| Notes (With Connectors) | - | Power handling limited to 1W; Return loss 5dB lower |
Product Features
1. TGG-Crystal Core for Extreme Stability
Adopts terbium gallium garnet (TGG) crystal, which offers 30% better thermal resistance than standard materials—critical for maintaining polarization consistency under high-power loads.
2. 20W High-Power Capacity
Supports continuous-wave power up to 20W (0.5W-20W options) and 10kW peak pulse power (ns-level), outperforming entry-level FRMs (typically ≤10W) for industrial laser systems.
3. Broad Wavelength Adaptability
Covers 780-1080nm with ±5nm bandwidth per center wavelength, eliminating the need for multiple single-wavelength components in multi-band setups.
4. Precision Polarization Control
45° reflected light rotation (±3° tolerance) + 20dB min extinction ratio (PM fiber type) ensures minimal polarization drift in high-sensitivity optical systems.
5. Industrial-Grade Durability
58×28×26mm rugged package with 5N tensile load resistance, tested to withstand vibration and temperature fluctuations in factory environments.
6. Fully Customizable Configurations
Offers tailored options for:
Fiber type (PM980/HI1060/PLMA-GDF)
Pigtail (bare fiber/900μm loose tube)
Connectors (FC/UPC/FC/APC/SC/APC)
Power ratings (average/peak)
Product Applications
This FRM is specifically designed for:
High-Power Fiber Amplifiers: Optimizes polarization in 10W-20W pump amplifiers to boost energy conversion efficiency by 15%.
MOPA Fiber Lasers: Stabilizes laser cavity polarization for consistent output in laser cutting/welding systems.
Optical Sensing: Enhances signal-to-noise ratio in fiber-optic gyroscopes (FOGs) used in aerospace precision measurement.
Industrial Laser Processing: Supports polarization control in 20W laser marking machines to improve pattern sharpness.
Laboratory R&D: Ideal for high-power optical component validation and coherent detection experiments.
Ordering Information Table
| Code Segment | Description | Options |
|---|---|---|
| Model Prefix | Product Series | KHHPMFRM- (PM Fiber Type); KHHPI FRM- (Single-Mode Fiber Type) |
| 1111 (Wavelength) | Center wavelength specification | 1064=1064nm, 980=980nm, 780=780nm, SSSS=Custom |
| 2 (Rotation Angle) | Polarization rotation angle | 1=45°, 2=90° |
| 333 (Fiber Type) | Fiber type selection | 003=PM980, 004=HI1060, 018=PLMA-GDF-10/125-M, SSS=Custom |
| 4 (Package Size) | Package dimension option | 0=58×28×26mm, S=Custom |
| 5 (Pigtail Type) | Pigtail configuration | 0=Bare Fiber, 1=900μm Loose Tube, S=Custom |
| 6 (Fiber Length) | Pigtail length setting | 0.8=0.8m, 1.0=1m, S=Custom |
| 7 (Connector Type) | Fiber connector type | 0=FC/UPC, 1=FC/APC, 2=SC/UPC, 3=SC/APC, N=None, S=Custom |
| 88 (Average Power) | Continuous-wave power rating | 00=500mW, 01=1W, 05=5W, 10=10W, 20=20W, SS=Custom |
| 99 (Peak Power) | Pulse peak power rating | 00=Continuous Wave, 01=1kW, 02=2kW, 10=10kW, SS=Custom |
FAQs
Q1: What is the maximum power this FRM can handle?
A1: It supports continuous-wave power up to 20W (0.5W-20W options) and 10kW peak pulse power (ns-level). With connectors, maximum power is limited to 1W.
Q2: Can the fiber type and connectors be customized?
A2: Yes. We offer fiber type options (e.g., PM980, HI1060) and connectors (FC/UPC, FC/APC, etc.), plus pigtail type/length customization.
Q3: How does connector use affect performance?
A3: With connectors, insertion loss increases by 0.3dB, return loss decreases by 5dB, and extinction ratio decreases by 2dB. Connectors must align with the slow axis for optimal performance.
Q4: What is the operating temperature range?
A4: It operates stably between -5°C and +70°C, with a storage temperature range of -40°C to +85°C. Avoid extreme temperature/humidity environments.
