638 nm Red Lasers

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

638 nm Red Lasers

The 638 nm emission line operates in the Red region of the optical spectrum. Our portfolio includes configurations across CW Lasers, Single-Frequency Lasers, Multi-wavelength Lasers, Fiber Lasers, supporting CW, Single-Frequency, Fiber-coupled operation. Compare power levels, linewidth, stability, and package dimensions below.

27 models5 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 639 nm 640 nm 642 nm 650 nm 655 nm 656 nm 656.5 nm 660 nm 665 nm 666 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

27 models · 5 series

638 NM RED Diode Laser.

15 models

Model	Wavelength	Output / average power	Fiber Core Diameter (um)	Fiber Connector	Fiber lengths	Fiber Jacket	Power stability (rms, 4 hours±3℃)	customers’ equipment. Cooled method	Storage temperature (℃)	Modulation option	Expected lifetime (hours)	Power stability (rms, 4 hours ± 3°C)	Transverse mode	Longitudinal mode	Spectral line width (MHz)	Noise of amplitude (rms, 20Hz-20MHz)	M2	Beam divergence, full angle (mrad)	Warm-up time (minutes)	Operating temperature (℃)	Power supply (100-240VAC)	Beam divergence (mrad)	Laser operation mode	Modulation optional	Connection	Operating temperature (°C)	Storage temperature (°C)	Humidity (%)	Weight (g)
YL-I-638	638 nm	1~40 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
MSL-III-638L	638 nm	1~40 mW	–	–	–	–	–	–	–	–	>10000	<2%, <1%, <0.5%	Near TEM00	Single	<100, (<50 optional)	<1%, <0.5%	<1.5	<1.2	<5	10-35	PSU-III-FDA	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/525	638 nm	2.9 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/450	638 nm	6 W	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
YL-I-638/525/450	638 nm	11 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/980/1550	638 nm	13 W	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
YL-I-638/808/980	638 nm	15 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/980/1064	638 nm	16 W	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
YL-I-638/525/450/1064/1470	638 nm	55 W	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
YLI-638/808/980/1470	638 nm	62 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/525/450/808/1550	638 nm	66 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/525/450/980/808	638 nm	71 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/525/450/808/1064	638 nm	74 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
YL-I-638/808/980/1064	638 nm	118 W	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	PVC, Metal optional	<2%, <1%	Air cooled	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	Datasheet
PGL-LF-638	638 nm	1~130 mW	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	<1.5	CW	TTL 30kHz or analog (0-3V or 0-5V)	Cable with flying leads	-10°C to +45°C	-20°C to +80°C	< 90 %, non-condensing	45g	Datasheet

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

1 model

Model	Wavelength	Output / average power	Spectral linewidth	Optical noise	M²
6 3 8	638 nm	1~40 mW	<100 MHz	<0.5%	<1.5

RGB Laser |

1 model

Model	Wavelength	Output / average power	Power stability	Cooled method	Fiber Core Diameter (um)	Fiber Connector	Fiber Jacket	Warm-up time (minutes)	Operating temperature (℃)	Operating voltage (VAC)	Modulation option	Expected lifetime (hours)
FC-W-638/525/450/940/980C	638 nm	71 W	<1%	Air cooled	200, 400, 0.22NA	SMA905, FC/PC optional	PVC, Metal optional	<5	0-30	100-240	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	Datasheet

High Power Laser Diode Module |

7 models

Model	Wavelength	Output / average power
LDM-638-10-2	638 nm	10 W	Datasheet
LDM-638-20-2	638 nm	20 W	Datasheet
LDM-638-2.5-1	638 nm	2.5 W	Datasheet
LDM-638-30-4	638 nm	30 W	Datasheet
LDM-638-40-4	638 nm	40 W	Datasheet
LDM-638-5-1	638 nm	5 W	Datasheet
LDM-638-7-1	638 nm	7 W	Datasheet

Ultra Compact OEM Laser,405 NM 1319 NM OEM Laser |

3 models

Model	Wavelength	Output / average power	Power stability	Fiber Core Diameter (um)	Fiber Connector	Fiber lengths	Storage temperature (℃)	Modulation option	Expected lifetime (hours)	Fiber Jacket	Cooled method
YL-I-638/520/450/808/1064	638 nm	74 W	<2%, <1%	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	–	–	Datasheet
YL-I-638/520/450/808/980	638 nm	71 W	<2%, <1%	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	PVC, Metal optional	Air cooled	Datasheet
YL-I-638/525/450/808/980	638 nm	71 W	<2%, <1%	200, 400, 600, 0.22NA	SMA905, FC/PC optional	1m	-20-50	DC-1kHz, 1kHz-10kHz, 10kHz-30kHz optional; TTL and Analog optional	>10000	PVC, Metal optional	Air cooled	Datasheet

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