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785nm Single-Frequency (SLM) Semiconductor Single-Longitudinal-Mode Laser
Single‑frequency (SLM) 785 nm lasers are very popular in Raman spectroscopy. At this wavelength, good fluorescence suppression is observed, as many fluorophores are not readily excited in the near‑infrared range. The small footprint and +5 VDC (typically USB) operating voltage are exactly what handheld and portable devices require. Integrated precision drive electronics ensure low noise and very stable operation over a wide temperature range. The 785 nm near‑infrared laser features low photon energy. At the same time, our technology provides a low‑cost solution for demanding Raman spectroscopy needs.
Product features:Compact size, 50 × 30 × 18 mm, suitable for integration;Identical dimensions and same control interface for easy interchangeability; 5 V supply, low power consumption, suitable for battery‑powered systems;Multiple wavelengths available ; Digital and analogue modulation; Optional fibre‑coupled output (SM, PM, MM); Space‑saving pin‑header connector for easy OEM integration control;Automatic power control (APC);TEC cooling; User‑friendly software interface l Part Number
Part Number:MP-SLM-785-100-FS
Application area:Raman spectroscopy research | Seed source
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Output Power Center Wavelength
100mW 785nm

Parameter | Unit | Min. | Typ. | Max. |
Center wavelength | nm | 784.7 | 784.8 | 785.1 |
Longitudinal mode | - | Single | - | |
Spectral width (FWHM) | pm | - | 0.1 | 1 |
Output power | mW | - | 130 | 150 |
Sidemode suppression ratio | dB | 40 | 50 | 60 |
Power stability (RMS, 8 hrs) | % | 0.01 | 0.03 | 0.25 |
Power stability (peak‑to‑peak, 8 hrs) | % | 0.05 | 0.15 | 0.5 |
Noise (RMS, 20 Hz – 20 MHz) | % | 0.05 | 0.25 | 0.6 |
Transverse mode | - | - | TEM00 | - |
Beam width (1/e²) | mm | - | 1 | 1.7 |
Beam height (1/e²) | mm | - | 1.2 | 1.9 |
Divergence angle (horizontal) | mrad | - | 1.5 | 1.8 |
Divergence angle (vertical) | mrad | - | 0.8 | 1.6 |
M² (horizontal axis) | - | - | 1.2 | 1.4 |
M² (vertical axis) | - | - | 1.3 | 1.6 |
M² effective | - | - | 1.3 | 1.6 |
Polarization direction | - | - | Horizontal | - |
Polarization contrast ratio | - | 1000 | 2000 | 5000 |
Control interface type | - | - | UART | - |
Operating mode | - | - | APC (CW) | - |
Modulation bandwidth | MHz | - | N/A | - |
Input voltage | VDC | 4.8 | 5 | 5.3 |
External power supply requirement | - | +5 V DC, 1.5 A | - | |
Product dimensions | mm | - | 50 x 30 x 18 | - |
Beam height from optical plane | mm | 9.9 | 10.4 | 10.9 |
Heat dissipation requirement | °C/W | - | 1 | - |
Optimal heatsink temperature | °C | 15 | 20 | 30 |
Warm‑up time (cold start) | mins | 0.2 | 1 | 2 |
Temperature stability | - | Internal TEC | - | |
Over‑temperature protection | - | Yes | - | |
Storage temperature (non‑condensing) | °C | -10 | - | 50 |
Net weight | kg | 0.1 | 0.12 | 0.14 |
Maximum power consumption | W | 0.4 | 2 | 10 |
Warranty (operating hours) | months | - | 14 (10000) | - |
RoHS | - | Yes | - | |
CE compliance | General Product Safety Directive (GPSD) 2001/95/EC (EMC) Directive 2004/108/EC | |||
Laser safety classification | - | 3B | - | |
OEM lasers are not compliant with | IEC60825-1:2014 (compliant using additional accessories) | |||
Product Characteristics
Spectrum



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