--- title: "780nm Single Frequency Fiber Laser | CW Fiber Laser Amplifiers" url: https://stacklist.com/card/579079d0-e539-4da3-969e-a525f0d752a9 source_url: "https://singlefrequencylaser.com/products/780-nm-single-frequency-continuous-wave-fiber-lasers-amplifiers" stack: https://stacklist.com/stack/981a45cb-c212-499b-92db-9835b98b1323 summary: "780 nm single-frequency continuous-wave fiber lasers use ultra-narrow linewidth DFB seed sources and all-fiber amplifiers to achieve high-power output with excellent beam quality (M² < 1.2). These lasers are widely used in Rb atom cooling, atomic gravity interferometers, optical lattices, and atomic clock applications." tags: "fiber-laser, 780nm, single-frequency, atom-cooling, laser-amplifier, continuous-wave" key_entities: "780 nm Single-Frequency Continuous-Wave Fiber Laser (technology), DFB laser (technology), All-fiber amplifier (technology), Rb atom cooling (concept), Atomic gravity interferometer (concept), Optical lattice (concept), Periodically poled crystal (technology)" classification: "reference" content_hash: "sha256:d08eb70f096b6fb4db192061141688c7f861e22cec27fb26f45816409d6d54f3" acp_version: "0.2" token_counts_approximate: 516 visibility: public agent_accessible: true status: "final" --- # 780nm Single Frequency Fiber Laser | CW Fiber Laser Amplifiers Fiber Laser Series 780 nm Single-Frequency Continuous-Wave Fiber Lasers / Amplifiers The 780 nm single-frequency continuous-wave fiber laser uses an ultra-narrow linewidth DFB laser as the seed source and achieves power amplification through an all-fiber amplifier. High-power frequency-doubled laser output is obtained using a single-pass periodically poled crystal scheme. This product covers a wavelength range of 765.5–782.5 nm and features narrow linewidth, mode-hop-free operation over a wide temperature range and under strong vibration, excellent beam quality (M² < 1.2), and high output power. It is widely used in Rb atom cooling, atomic gravity interferometers, optical lattices, and related applications. Get Quote Now Key Features Ultranarrow linewidth (< 5 kHz) Seed laser tuning supported Operates reliably under high/low temperature and vibration environments Excellent beam quality (M² < 1.2) Modehopfree operation Applications Rb atom cooling Magic optical lattice Atomic gravimeters / atom interferometers Atomic clocks Technical Parameters Category Parameter Unit Specification **Optical Parameters** Central Wavelength nm 780 ± 1 Output Power W > 1.5 Seed Linewidth kHz < 5 (single-frequency) Side-Mode Suppression Ratio dB > 50 Polarization Extinction Ratio dB > 25 Power Stability (RMS) — ≤ 0.5% Relative Intensity Noise — RIN < −140 dBm/Hz @ >100 kHz Beam Quality — TEM₀₀, M² < 1.2 Frequency Tuning Range MHz > 500 **Functional Parameters** Output Type — PM780 fiber, ≥ 1.5 m, FC/APC Communication Protocol — RS485 Cooling Method — Air cooling Power Supply — AC 220 V Total Power Consumption W < 300 **Environmental Parameters** Operating Temperature °C −20 to 50 Structural Dimensions 780 nm Single-Frequency Continuous-Wave Fiber Lasers / Amplifiers - Diagram 1 Need More Information? Our technical team is ready to help you find the perfect laser solution for your specific requirements. Get detailed specifications, custom configurations, and expert consultation. Request a Quote Browse All Products