NLA-20-04 4-Channel Narrow Linewidth Low-Noise PM Fiber Amplifier

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Digital Laser Components

Synchronously amplifying single-frequency narrow-linewidth laser, delivering 20W output power per channel (80W in total)

The NLA-20-04 4-channel narrow linewidth PM fiber amplifier array is a core component for a new generation of low-noise fiber amplification systems. It features an integrated opto-electro-mechanical design with four independent, high-performance PM fiber amplifier channels. This PM fiber amplifier array module achieves a single-channel output power of 20W while maintaining a high beam quality of M²<1.1 and a polarization extinction ratio of >20dB. It also ensures extremely low phase noise and spectral broadening, providing a high-quality input for subsequent laser power amplification.

Parameters

Optical Characteristics
Input laser power (mW)	>5
Max. output power (W)	20 (single channel)
Power tunability (%)	10-100
Polarization extinction ratio (dB)	>20 (fast axis cut-off)
Laser wavelength (nm)	1064±2
Beam quality (M²)	< 1.1
Laser linewidth (GHz)	10-100 (adjustable)

Optical Output
Input fiber interface	FC/APC
Input fiber type	PM980
Output fiber type	PLMA-GDF-10/125-M
Output fiber interface	Bare fiber
Pigtail length (m)	1

Electrical Characteristics
Input voltage (V)	AC220 or DC24
Communication method	RS485

Environmental Adaptability
Operating conditions	-5 to 45°C, < 90%RH, can be reinforced for special environments
Storage conditions	-20 to 45°C, < 90%RH, can be reinforced for special environments

Advantages

Powerful amplification
Supports the simultaneous amplification of four milliwatt-level (>5mW) single-frequency/narrow linewidth lasers, with an output power of up to 20W per channel and a total power of 80W.
Ultra-low phase noise
Utilizes phase noise suppression technology to ensure spectral broadening of less than 0.5% during amplification.
Exceptional environmental adaptability
The standard version operates stably across a wide temperature range of -5°C to 45°C, with an optional military-grade reinforced design available for extreme environments.
Robust engineering design
Compact, modular structure.
Supports dual power supply modes (AC220V/DC24V).
Equipped with 1-meter bend-resistant special pigtail fibers.
Features independent channel monitoring and fault diagnosis for all channels.

Applications

High-energy laser synthesis systems
Wavefront control for phased array lidar.
Pre-amplification stage for spectral/coherent synthesis systems.
Multi-channel beam synthesis routing networks.
Smart sensing
Light sources for multi-line lidar in autonomous driving.
Power enhancement for laser communication MIMO systems.
Specialized industrial applications
Power distribution systems for high-precision laser processing.
Nodes in distributed fiber sensing networks.
Ground station relays for space optical communication.

Customization

This low-noise PM fiber amplifier offers in-depth customization options:

Integration of wavelength division multiplexing (WDM) devices at input/output ends.
Support for a cascaded amplification architecture design.
Optional air/water cooling systems for continuous power mode.
Specialized wavelength customization (covering the 1000-1100nm band).
Military-standard reinforced packaging (IP68 protection rating).

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