---
title: "Single Frequency Tunable Narrow Linewidth Semiconductor Laser"
url: https://stacklist.com/card/c676b4e5-b906-40db-ad05-24a18a28e2c7
source_url: "https://singlefrequencylaser.com/products/sefl-t-tunable-narrow-linewidth-semiconductor-laser"
stack: https://stacklist.com/stack/981a45cb-c212-499b-92db-9835b98b1323
summary: "SEFL-T is a tunable narrow-linewidth semiconductor laser designed for single-frequency, high-spectral-purity output with compact construction and precise wavelength control via temperature and current tuning. It is ideal for applications including LIDAR systems, scientific research, coherent detection, and fiber optic sensing, offering high energy output with low noise and excellent frequency stability."
tags: "semiconductor-laser, narrow-linewidth, tunable-wavelength, lidar, fiber-optic-sensing, coherent-detection, spectral-purity"
key_entities: "SEFL-T (technology), semiconductor laser (technology), narrow-linewidth (concept), single-frequency (concept), LIDAR (technology), fiber-optic sensing (technology), coherent detection (concept)"
classification: "reference"
content_hash: "sha256:0997a10440c9f523f6746db9119f1accdba736ff5e7aa356f713bb25f66c82f8"
acp_version: "0.2"
token_counts_approximate: 391
visibility: public
agent_accessible: true
status: "final"
---

# Single Frequency Tunable Narrow Linewidth Semiconductor Laser

Single-Frequency High-Energy Series SEFL-T Tunable Narrow-Linewidth Semiconductor Laser SEFL-T is a tunable narrow-linewidth semiconductor laser designed for single-frequency, high-spectral-purity output. It features compact construction, stable performance, and precise wavelength control via temperature and current tuning, making it ideal for applications requiring high energy, low noise, and excellent frequency stability. Get Quote Now Key Features High spectral performance Narrow linewidth Compact and easy to integrate Temperature / current tuning Applications LIDAR & Ranging Systems Scientific Research & Laboratories Coherent Detection & Interferometry Fiber Optic Sensing Technical Parameters Technical Specifications Parameter Name Unit Min Typical Max Center Wavelength* nm - 1064 / 1550 - Output Power* mW - 50 - Linewidth* MHz 1 2 3 Beam Quality (M²) — - <1.1 - Power Stability % - 1 - Frequency Stability MHz/min 2 3 5 Relative Intensity Noise dB/Hz - <−120 @ 10 MHz - Temperature Tuning Range GHz - 500 40 Temperature Tuning Coefficient GHz/K 20 30 40 Temperature Tuning Speed GHz/s 20 30 - Current Tuning Range GHz - 3 - Current Tuning Coefficient MHz/mA - 400 - Current Tuning Bandwidth kHz - 100 - Current Tuning Speed GHz/ms - 10 - Fiber Type - - PM980 - Fiber Interface - - FC/APC - 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