NLSO Series Single-Mode Narrow Linewidth Diode Laser Module

RealLight NLSO Series Single-Mode Narrow Linewidth Laser Module Introduction

1. Product Overview
The NLSO series RealStable® single-mode narrow linewidth laser module is independently developed by RealLight, serving as the core excitation light source for spectroscopic and bio-optical instruments. Integrated with laser driving circuit and high-precision TEC thermoelectric cooling control, it adopts VBG wavelength locking technology to deliver ultra-narrow spectral linewidth below 0.1 nm. Single-mode output ensures pure beam with long-term stable wavelength and power performance.
Ultra-compact size and low power consumption with dual standard control interfaces (PH2.0 & USB) enable seamless embedding into desktop analyzers and portable inspection equipment. Customization and secondary development are supported, and full-matching RL-RP Raman probes are available to form integrated Raman detection systems for laboratory and on-site non-destructive testing.

2. Core Product Advantages
2.1 Ultra-Narrow Linewidth & High Spectral Purity for High-Precision Spectroscopy
All models feature spectral linewidth ＜0.1 nm; 785 nm and 1064 nm versions achieve side-mode suppression ratio of 35~45 dB with excellent stray light rejection. It resolves adjacent Raman peaks without overlapping distortion and greatly improves spectral resolution for Raman and fluorescence testing.
532 nm adopts solid-state laser architecture, while 785 nm / 1064 nm are semiconductor narrow linewidth variants, covering visible to near-infrared bands to handle samples with varying fluorescence interference.

2.2 Superior Wavelength & Power Stability for Repeatable Test Data
Closed-loop TEC temperature control and power feedback circuit are built in. Over 4-hour continuous operation: 532 nm wavelength drift ±5 pm, 785 / 1064 nm wavelength drift ±7 pm. Power performance: RMS fluctuation ＜3% for 532 nm, peak-to-peak fluctuation ＜±2% for 785 & 1064 nm. Minimal drift during long sampling eliminates frequent calibration, satisfying strict standards of quantitative spectroscopy and flow cytometry.

2.3 Miniature Low-Power Integrated Design for Easy Integration
Compact dimension 76.2×63.5×22 mm with weight ＜150 g, typical power consumption below 5 W, operating on low-voltage 5 VDC / 2 A power supply. Output power continuously adjustable from 0 to 100%. Stable output is available after 15-min warm-up, allowing flexible layout inside space-limited handheld devices and compact confocal microscopes.

2.4 Dual Standard Interfaces & Full Supporting Matching
PH2.0 hardware port and USB digital communication support upper-computer power adjustment, status reading and timing synchronization for customer secondary development. Complete set solution with full RL-RP Raman probes is offered to deliver an all-in-one Raman light source package.

2.5 Wide Temperature & Humidity Tolerance for Versatile Working Conditions
Operating temperature 10~35 ℃ (heat sink required); storage range -10~60 ℃ with relative humidity 0~70% RH. Stable performance in lab constant-temperature rooms and ordinary outdoor equipment without spectral degradation from ambient fluctuation.

3. Main Application Fields
3.1 Raman Spectroscopy (Core Application)
Matched with RL-RP Raman probes for non-destructive qualitative & quantitative analysis of minerals, polymers, lithium batteries, pharmaceuticals and food, serving as standard excitation source for portable field Raman and desktop research spectrometers.

3.2 Bio-Optical Analytical Instruments
Compatible with flow cytometers, confocal microscopes and fluorescence spectrometers. Narrow-linewidth stable excitation suppresses background noise and improves SNR for cellular fluorescence imaging and biological sample spectroscopy.

3.3 Industrial Optical Measuring Equipment
Laser particle size analyzers and particulate optical detectors rely on stable single-mode beam to guarantee high precision and repeatability of particle measurement.

4. Product Summary
RealLight NLSO single-mode narrow linewidth laser module integrates four core strengths: ultra-narrow linewidth below 0.1 nm, pm-level wavelength stability, miniature low-power structure and pure single-mode beam. Standard communication interfaces simplify equipment integration and secondary development; full compatibility with all Raman probes delivers complete light source packages covering Raman, fluorescence, bio-microscopy and particle sizing.
Multi-wavelength options and customizable power fit both academic labs and portable industrial instruments. Outstanding long-term stability reduces calibration & maintenance cost, making it a cost-effective domestic alternative to imported narrow linewidth excitation lasers for analytical instrumentation manufacturers.