Ultra-Narrow Linewidth 1.5µm Single Frequency Fiber Laser
Fiber laser components, Industrial laser solutions
The CKSF-R ultra-narrow linewidth laser and single frequency fiber laser offers linewidth below kHz level, features ultra-low phase noise and relative intensity noise (RIN), and the side-mode suppression ratio (SMSR) is over 55dB. The output power is at mW level, and higher output power can be tailored to your specific needs. The wavelength is available in range of 1530-1575nm.
The CKSF-R and CKSF-D series are ultra-narrow linewidth single frequency fiber lasers designed for high-precision optical applications. These lasers operate at 1.5 μm wavelength and provide exceptional frequency stability, ultra-low phase noise, and long coherence length. Using advanced erbium-doped single frequency fiber laser technology, this laser source delivers stable single-frequency output suitable for LiDAR, fiber optic sensing, laser spectroscopy, coherent communication systems, and other scientific applications.
CKSF-D-ER-M: utilizing erbium-doped fiber, ultra-narrow linewidth <1kHz, low phase noise
CKSF-D-EY-M: utilizing erbium–ytterbium co-doped fiber, linewidth <15kHz, low relative intensity noise (RIN)
1.5µm Narrow Linewidth Single Frequency Fiber Laser, CKSF-R
Features
- Ultra-narrow linewidth laser design
- Stable single-frequency & single polarization operation
- Free of mode-hops, no bursting noise
- Flexible design, multiple wavelengths are optional
- Flexible design, multiple wavelengths are optional
- Linear polarization output, high polarization extinction ratio (PER)
- Small size, robust package
- Long coherence length laser performance for precision applications
Applications
- Fiber optic sensing
- LiDAR
- Cold atom physics
- Laser spectroscopy
- Coherent communication
- 1.5 μm Single Frequency Pulsed Source applications
- Other scientific research tasks
1.5µm Narrow Linewidth Single Frequency Fiber Laser, CKSF-D
Features
- Ultra-narrow linewidth
- Stable single-frequency & single polarization operation
- Free of mode-hops, no bursting noise
- Low phase noise and low relative intensity noise
- Flexible design, multiple wavelengths are optional
- Linear polarization output, high polarization extinction ratio (PER)
- Small size, robust package
- Long coherence length laser for high stability optical systems
Applications
- Fiber optic sensing
- LiDAR
- Cold atom physics
- Laser spectroscopy
- Coherent communication
- 1.5 μm Single Frequency Pulsed Source systems
- Other scientific research tasks
Specifications
| Parameter | Unit | Specification | |
| Typ. | Typ. | ||
| Part no. | CKLIS-D-ER-M | CKLIS-D-EY-M | |
| Center wavelength | nm | 1530-1570nm | |
| Output power | mW | 5-100 | |
| Laser emission | CW, Single frequency & Single longitudinal mode | ||
| Beam quality | M² | < 1.05 | |
| Linewidth | kHz | < 1 | < 10 |
| OSNR(50pm resolution) | dB | >50(typical>55dB) | >55(typical>60dB) |
| Relaxation oscillation peak frequency | kHz | ～600 | ～800 |
| Relative intensity noise(RIN) peak | dB/Hz | -100 | -110 |
| Relative intensity noise(RIN) | dB/Hz | 23 | |
| Output power stability | % | < 1 | |
| Wavelength thermal tuning range | nm | >0.7 | >0.8 |
| Fast PZT modulation | Optional | ||
| PZT modulation frequency | kHz | DC-20kHz | |
| Output isolation | dB | 30 | |
| Operating voltage | V | 12VDC | |
| Output fiber type | PM1550-XP | ||
| Output fiber length | m | >0.5 | |
| Optical connector | FC/APC | ||
| Output fiber for monitor | Optional | ||
| Interface | RS485 | ||
| Operating temperature | ℃ | 5-60 | |
| Storage temperature | ℃ | -85 | |
| Dimension | mm | 175（L)×130(W)×30(H) | |
| 145（L)×100(W)×25(H) | |||
Ultra-Narrow Linewidth Laser for Precision Optical Applications
Ultra-narrow linewidth lasers are designed for applications requiring extremely stable frequency, ultra-low noise, and long coherence length laser performance. The 1.5 μm single frequency fiber laser is widely used in LiDAR systems, fiber optic sensing, coherent communication, precision spectroscopy, and distributed sensing applications.
With advanced erbium-doped single frequency fiber laser technology, the laser provides stable single-frequency output, excellent spectral purity, and reliable long coherence length performance for demanding scientific and industrial applications.
Erbium-Doped Single Frequency Fiber Laser Technology
Techwin is known as an expert company in developing and manufacturing fiber lasers, erbium-doped single frequency fiber lasers, fiber amplifiers, and fiber sources. We also strive to provide our customers with custom fiber laser solutions suited for your applications. All of our high-power fiber lasers and amplifiers are manufactured following a rigorous quality management system.
We are more than happy to share our laser technology with worldwide customers and are committed to earning the ongoing trust of our customers with our industrial fiber lasers, ultra-narrow linewidth laser solutions, and expert support and service across various industrial segments.
- Fiber laser sources & solutions
- Industrial fiber lasers
- Industrial laser solutions
- Fiber laser manufacturer
- Commercial lasers
- Digital communications network
- Computer network devices
- Laser solutions
- Laser modules and components
- Optical components and modules
- Ultra-narrow linewidth laser
- Long coherence length laser
- Fiber optic sensing
- Lidar
- Erbium-doped single frequency fiber laser
- 1.5 μm Single Frequency Pulsed Source
APPLICATIONS
FAQs – Ultra-Narrow Linewidth 1.5µm Single Frequency Fiber Laser
What is an ultra-narrow linewidth laser?
An ultra-narrow linewidth laser is a highly stable laser source with extremely small spectral linewidth, typically below kHz level. It offers low phase noise, excellent frequency stability, and long coherence length for precision optical applications.
What are the advantages of a long coherence length laser?
A long coherence length laser provides stable phase performance over longer distances, making it ideal for coherent communication, LiDAR, interferometry, fiber optic sensing, and precision spectroscopy applications.
What wavelength range is available for the single frequency fiber laser?
The CKSF-R and CKSF-D series operate in the 1530–1575nm wavelength range and are designed for 1.5 μm optical applications.
What is an erbium-doped single frequency fiber laser?
An erbium-doped single frequency fiber laser uses erbium-doped fiber as the gain medium to generate stable single-frequency output at 1.5 μm wavelength. It offers low noise, high spectral purity, and excellent stability for scientific and industrial applications.
What applications are suitable for the 1.5 μm single frequency pulsed source?
The 1.5 μm single frequency pulsed source is widely used in LiDAR systems, coherent optical communication, fiber sensing, laser spectroscopy, cold atom physics, and precision measurement systems.
What is the difference between the CKSF-R and CKSF-D series?
The CKSF-R series provides ultra-narrow linewidth performance below kHz level with low phase noise, while the CKSF-D series includes erbium-doped and erbium-ytterbium co-doped configurations for different linewidth and power requirements.