Recommended Controller / Mount Options
Item #	Mount	Diode Driver	TEC Controller
CLD1015
LM14S2		-	-
ITC4000 Series	Use with LM14S2 Mount
LDC200 Series	Use with LM14S2 Mount		-
TED200C	Use with LM14S2 Mount	-

Features

• Center Wavelengths from 405 nm to 650 nm
• Typical Output Powers from 1.5 mW to 5 mW
• 3 nm to 8 nm Typical 3 dB Bandwidth
• 14-Pin Butterfly Package Pigtailed with 1 m of SM Fiber
• 2.0 mm Narrow Key FC/APC Connector
• Integrated TEC and Thermistor 
• Compatible with Thorlabs' Laser Diode Mounts and Controllers (See Table to the Right)

Superluminescent Diodes (SLDs) are excellent high-power, broadband light sources that are ideal for use in applications such as optical sensing, display technology, metrology, and imaging. This page contains SLDs with center wavelengths from 405 nm to 650 nm that are built into a butterfly package. Thorlabs also offers NIR SLDs for wavelengths from 810 nm to 1550 nm, many of which are ideal for spectral-domain optical coherence tomography.

Each device is built into a 14-pin butterfly package with an integrated thermoelectric cooler (TEC) and thermistor to ensure output stability. For more information on the pin assignments, see the Pin Diagrams tab; note that the SLD650B 650 nm SLD is the only model that includes a monitor photodiode. The SLD output is coupled into an SM fiber with terminated with a 2.0 mm narrow key FC/APC connector. We do not recommend using these SLDs with components that are prone to back reflections, such as FC/PC connectors, because optical feedback can diminish the output power or damage the SLD.  

The SLDs featured on this page are single spatial mode and have a near-Gaussian optical spectrum. More detailed typical specifications for each item, as well as mechanical drawings, are available in the tables below. Each SLD is shipped with an individualized product data sheet, which includes information on the spectrum and operating parameters of the specific device.

Butterfly Package, Type 1 (All Models Except SLD650B)

Butterfly Package, Type 1 (SLD650B Only)

Superluminescent Diode Performance:

Item #	Center Wavelengtha	Package	Output Powerb	Bandwidth (3 dB)b	Optical Spectrum	LIV Curvesc	Equivalent Benchtop Source
SLD405B	405 nm	Butterfly, SM Pigtail	5 mW	3 nm			N/A
SLD450B	450 nm	Butterfly, SM Pigtail	5 mW	6 nm			N/A
SLD510B	510 nm	Butterfly, SM Pigtail	1.5 mW	8 nm			N/A
SLD635B	635 nm	Butterfly, SM Pigtail	3 mW	6 nm			N/A
SLD650B	650 nm	Butterfly, SM Pigtail	3 mW	6 nm			N/A
SLD810S	810 nm	Butterfly, SM Pigtail	15 mW	30 nm			N/A
SLD830S-A10W	830 nm	Butterfly, SM Pigtail	10 mW (Min)	60 nm			N/A
SLD830S-A20W	830 nm	Butterfly, SM Pigtail	20 mW (Min)	55 nm			N/A
SLD830S-A10	830 nm	Butterfly, SM Pigtail	13 mW	20 nm			N/A
SLD830S-A20	830 nm	Butterfly, SM Pigtail	22 mW	20 nm			N/A
SLD850S-A10W	850 nm	Butterfly, SM Pigtail	10 mW (Min)	60 nm			N/A
SLD850S-A20W	850 nm	Butterfly, SM Pigtail	20 mW (Min)	55 nm			N/A
SLD880S-A7	880 nm	Butterfly, SM Pigtail	7 mW	40 nm			N/A
SLD880S-A25	880 nm	Butterfly, SM Pigtail	25 mW	40 nm			N/A
SLD930S-A40W	930 nm	Butterfly, SM Pigtail	40 mW	45 nm			N/A
SLD930P-A40W	930 nm	Butterfly, PM Pigtail	40 mW	45 nm			N/A
SLD970S-A40W	970 nm	Butterfly, SM Pigtail	40 mW	50 nm			N/A
SLD970P-A40W	970 nm	Butterfly, PM Pigtail	40 mW	50 nm			N/A
SLD1050S	1050 nm	Butterfly, SM Pigtail	8 mW	50 nm			N/A
SLD1050P	1050 nm	Butterfly, PM Pigtail	8 mW	50 nm			N/A
SLD1050S-A60	1050 nm	Butterfly, SM Pigtail	60 mW	70 nm			N/A
SLD1050P-A60	1050 nm	Butterfly, PM Pigtail	60 mW	70 nm			N/A
SLD1021S	1310 nm	Butterfly, SM Pigtail	12.5 mW	85 nm			S5FC1021S
SLD1018S	1310 nm	Butterfly, SM Pigtail	30 mW	45 nm			S5FC1018S S5FC1018P
SLD1018P	1310 nm	Butterfly, PM Pigtail	30 mW	45 nm			S5FC1018S S5FC1018P
SLD1325	1325 nm	Butterfly, SM Pigtail	10 mW (Min)	100 nm (Min)			N/A
SLD1550S-A1	1550 nm	Butterfly, SM Pigtail	1.0 mW	110 nm			N/A
SLD1550P-A1	1550 nm	Butterfly, PM Pigtail	1.0 mW	110 nm			N/A
SLD1550S-A2	1550 nm	Butterfly, SM Pigtail	2.5 mW	90 nm			S5FC1550S-A2 S5FC1550P-A2
SLD1550P-A2	1550 nm	Butterfly, PM Pigtail	2.5 mW	90 nm			S5FC1550S-A2 S5FC1550P-A2
SLD1005S	1550 nm	Butterfly, SM Pigtail	22 mW	50 nm			S5FC1005S
SLD1550S-A40	1550 nm	Butterfly, SM Pigtail	40 mW	33 nm			N/A
SLD1550P-A40	1550 nm	Butterfly, PM Pigtail	40 mW	33 nm			N/A

• The center wavelength definition for these devices depends on spectral shape. See the Specs tab above.
• Values are typical unless otherwise noted.
• Basic superluminescent diode characteristics can be measured by increasing current (I) while measuring the device voltage (V) and light output (L). The resulting data is usually referred to as an LIV curve.