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631 nm Red Lasers

Red · CW, Single-Frequency, Fiber-coupled · Datasheets & quote request

631 nm Red Lasers

The 631 nm emission line operates in the Red region of the optical spectrum. Our portfolio includes configurations across Single-Frequency Lasers, Fiber Lasers, CW Lasers, supporting CW, Single-Frequency, Fiber-coupled operation. Compare power levels, linewidth, stability, and package dimensions below.

7 models2 seriesquote after qualification

Key applications

  • Precision interferometry and optical alignment (He-Ne equivalent)
  • Raman spectroscopy (fluorescence suppression)
  • Deep-tissue fluorescence imaging (Cy5, Alexa Fluor 647)
  • Photodynamic therapy (PDT) and biophotonics
  • Optical tweezers and particle trapping

7 models · 2 series

631 NM RED Diode Laser.

6 models
ModelWavelengthOutput / average powerPower stability (rms, 4 hours ± 3°C)Transverse modeBeam divergence, full angle (mrad)Warm-up time (minutes)Operating temperature (℃)Power supply (100-240VAC)Parameters of customed power supplyExpected lifetime (hours)Free space output power (mW)Fiber coupled output power (mW)Power stability (rms, 4 hours , ±3℃)Longitudinal modeCurrent adjustment rangeRelative intensity noise (rms, 10Hz-3MHz)Frequency shift (MHz) (over ±2℃and 8 hours)M2Fiber connectorFiber length(m)Fiber jacketPolarization ratio (dB)Cooled methodOperating voltage (VAC)Spectral linewidth (nm)Relative intensity noise (rms,10Hz-3MHz)Frequency shift (MHz)(over ±2℃and 8hours )Beam diameter at the aperture (1/e2, mm)Polarization ratioOperating temperature (°C)
TUN-628-637631 nm1~40 mW<3%, <2%, <1%Near TEM00<1.0<520-30PSU-TUNTEC: 7-12kΩ>10000––––––––––––––––––––Datasheet
FL-631-SLM631 nm1~1500 mW–TEM00–<3015-30––>100001mW-1.5W1-500<2%, <1%SLM1-100%<0.3%, <0.1%, (<0.05% optional)<±200<1.1FC/APC1PVC, Metal optional>15 Horizontal (Vertical optional)Air cooled or Water cooled110/220V––––––Datasheet
FL-631-LN-L631 nm1~1500 mW–TEM00–<3015-30––>100001mW-1.5W1-500<2%, <1%SLM1-100%––<1.1FC/APC1PVC, Metal optional>15 Horizontal (Vertical optional)Air cooled or Water cooled110/220V<0.002<0.1%, <0.05%<±200–––Datasheet
MRL-U-631-SF631 nm1~200 mW–TEM00–<10–PSU-SF–>10000––––––––––––Air Cooled/ Water Cooled––––~3.0>100:1–Datasheet
MDL-III-631631 nm1~800 mW<2%, <1%, <0.5%Multimode<3.0×0.5<5–PSU-III-FDA/PSU-III-LED/PSU-A-D/PSU-III-OEM–>10000––––––––––––Conduction––––––10-35Datasheet
MRL-631(FC)631 nm1~160 mW––––––––––––––––––––––––––––

Single Longitudinal Mode SLM Laser, Green and Infrared Single Frequency Laser AT 532 NM and 1064 NM.

1 model
ModelWavelengthOutput / average powerSpectral linewidthOptical noiseM²
631631 nm1~1500 mW<20 kHz<0.05% RIN(DC-3 MHz)<1.1

Not sure which model fits?

Send the physics — wavelength, mode, power or energy, linewidth or pulse width, delivery, control and safety — and we qualify the source.