666 nm Red Lasers

Red · CW · Datasheets & quote request

666 nm Red Lasers

The 666 nm emission line operates in the Red region of the optical spectrum. Our portfolio includes configurations across CW Lasers, supporting CW operation. Compare power levels, linewidth, stability, and package dimensions below.

3 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

Other Red lines in catalog (34)

Explore all 400+ wavelengths →

631 nm 633 nm 635 nm 637 nm 638 nm 639 nm 640 nm 642 nm 650 nm 655 nm 656 nm 656.5 nm 660 nm 665 nm 669 nm 670 nm 671 nm 678 nm 679 nm 680 nm 685 nm 689 nm 690 nm 698 nm

Popular benchmark wavelengths

266 nm 355 nm 405 nm 450 nm 488 nm 515 nm 520 nm 532 nm 561 nm 589 nm 633 nm 640 nm

3 models · 2 series

666nm RED Laser, Solid State Laser, DPSS RED Laser |

1 model

Model	Wavelength	Output / average power	Transverse mode	Polarization Ratio	Warm-up time (minutes)	Operating Temperature (°C)	Modulation optional	Power supply (100-240VAC)	Expected lifetime (hours)
MRL-FN-666	666 nm	1~200 mW	TEM00	>100:1, Vertical (Horizontal Optional)	<5	10-35	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	PSU-H-FDA/ PSU-H-LED/ PSU-SR	>10000	Datasheet

666nm RED Laser, Solid State Laser, DPSS RED Laser |

2 models

Model	Wavelength	Output / average power	Power stability (rms, over 4 hours)	Fiber NA	Fiber Connector	Fiber Length (m)	Warm-up time (minutes)	Operating temperature (℃)	Cooling way	Expected lifetime (hours)	Warranty
FC-666	666 nm	1~180 mW	<1%, <2%, <3%, <5%	0.22	SMA905	1 (Other lengths are available on request)	<5	10~35	By air	10000	1 year	Datasheet
MRL-666(FC)	666 nm	1~180 mW	–	–	–	–	–	–	–	–	–

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