The Newport LPM639-30C is a 30 mW continuous wave laser diode module delivering stable red light at 639 nm ±10 nm. Built on Fabry-Perot technology, this self-contained module integrates the laser diode, drive electronics, collimating optics, and thermal management in a compact Ø12.7 × 50.8 mm housing. It operates in Constant Optical Output Power Mode, automatically adjusting drive current to maintain stable output across temperature and focus variations—critical for precision applications demanding <5% power drift over 8 hours.
Technical Specifications
• Wavelength: 639 nm (±10 nm tolerance)
• Output Power: 30 mW
• Power Stability: <5% over 8 hours
• Spectral Width (FWHM): 2 nm
• Beam Profile: Circular via integrated microlens
• Beam Diameter (1/e²): 1.56 × 1.56 mm
• Beam Divergence (full angle): <1.2 mrad
• Maximum Operating Current: 120 mA
• Noise Floor: <0.5%
• Operating Temperature Range: 0 to 40°C
– Key Features
• Constant optical power regulation compensates for environmental drift and thermal effects
• User-accessible potentiometer enables optical output adjustment from 0 to 100%
• Collimated output simplifies optical system integration
• Requires 3.5 to 5 VDC external supply (Newport LPMS-5-110 recommended)
• Metal mounting fixture and heat sink recommended for optimal thermal performance, especially above 25°C or near maximum input voltage
• Sealed factory calibration potentiometer ensures long-term stability
– Typical Applications
• Microscopy and fluorescence imaging
• Spectroscopic analysis
• Laser alignment and tooling
• Interferometry
• Machine vision and inspection
• Marking and engraving
• Flow cytometry
• Tissue fluorescence diagnostics
– Compatibility & Integration
The module mounts directly to standard optical fixtures. Circular beam geometry and low divergence (<1.2 mrad) support efficient coupling into fiber optics, spectrometers, and microscope objectives. External 5 VDC power required; Newport's LPMS Series power supplies (sold separately) provide drop-in compatibility for the 635–2330 nm laser range.
