Visible Superluminescent Diodes (SLDs), TO-56 Can

Ø5.6 mm TO Can Package with H Pin Codes
Broad Emission with Center Wavelengths from 405 nm to 650 nm
10 mW Typical Output Power

SLD450T

450 nm SLD, 10 mW, TO-56 Can

Related Items

Visible SLDs, Butterfly Package

NIR Superluminescent Diodes

Benchtop SLDs for the IR

Diode Sockets

Laser-Pumped Phosphor
Light Source

Free-Space Optical Isolators

Power and Energy Meters

ESD Wrist Straps

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Overview
Feedback
Selection Guide

Pin Code

The pin code indicates which mounts and diodes are compatible. The drawing does not represent an exact wiring diagram.

Recommended Controller / Mount Options
Item #	Mount	Diode Driver	TEC Controller
LDM56		-	-
ITC4000 Series	Use with LDM56 Mount
LDC200 Series	Use with LDM56 Mount		-
TED200C	Use with LDM56 Mount	-

Features

Center Wavelengths from 405 nm to 650 nm
4 nm or 5 nm Typical 3 dB Bandwidth
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 display technology, holography, metrology, and spectroscopy. When fit into an external cavity, these SLDs can be used as a tunable laser. This page contains Thorlabs' SLDs with center wavelengths from 405 nm to 650 nm that are built into a TO-56 package with pin code H. Visible SLDs in a butterfly package are also available, as well as NIR SLDs for wavelengths from 810 nm to 1550 nm, many of which are ideal for spectral-domain optical coherence tomography.

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.

With an H pin code, these visible SLDs are compatible with Thorlabs' S7060R diode socket and the LDM56 laser diode mount, which has an integrated thermoelectric cooler (TEC). These mounts are compatible with Thorlabs' laser diode and temperature controllers; see the table above for details. Please note that optical feedback can diminish the output power or damage the SLD and back-reflections should be avoided. SLDs are also sensitive to electrostatic shock, and proper precautions must be taken when handling the device (see our electrostatic shock accessories).

Posted Comments:

user (posted 2024-03-19 11:41:53.563)

Dear tech support, I am using the SLD405T with the LDM56 mount. Above around 50 mA (few mW optical power output) the power fluctuates. I am suspecting a wrong orientation of the SLD into the mount and/or a wrong polarity switch setting. Can you tell me how to plug it properly ? The style H diagram and the indications in the MFGSpecSheet document are confusing to me. Thank you for your help.

jjadvani (posted 2024-03-20 04:16:07.0)

Dear User, Thank you for your feedback. I am reaching out to you directly in order to troubleshoot your issue.

Kevin Affannoukoue (posted 2023-11-06 13:45:14.267)

Dear Thorlabs, I purchased the SLD450T and the optical beam does not look uniform at all. With the adjustable collimation tube (LTN330-A), it is impossible to find something close to a collimated beam. I use it for a microscope-like experiment and the image is speckleized. Is it normal ? Do you know what could be the reason ? Do you have solutions for these problems ? Thank you for your help. Best regards.

dpossin (posted 2023-11-07 05:47:49.0)

Dear Kevin, Thank you for your feedback. I am reaching out to you directly in order to discuss that in more detail.

Junhyeok Hur (posted 2022-08-17 15:43:08.13)

Dear Thorlabs We are looking for a laser diode mount to drive SLD650T. Because SLD650T has a wide diverging angle, it requires high NA. Currently, we are usingLDM9T/M but it has large averation due to the short focal length(3.1mm) compared to the margin of the thread mount. Therefore, we want to use LTN330-B but it does not contain the TEC. Could you recommend any other laser diode mount for SLD650T? Best regards.

fmortaheb (posted 2022-08-18 05:09:08.0)

Thank you very much for contacting us! Our recommended mount for these SLDs is LDM56. We will reach out to you directly to discuss your application in detail.

Superluminescent Diode Performance:

The rows shaded green below denote SLDs that are suitable for use in OCT systems.

Click on an Item # and then select the Documents tab to find product document download links, including full spec sheets.

Item #	Center Wavelength	Package	Output Power^a	Bandwidth (3 dB)	Integrated Isolator	Equivalent Benchtop Source
SLD405B	405 nm	Butterfly, SM Pigtail	5 mW	3 nm	No	No
SLD450B	450 nm	Butterfly, SM Pigtail	5 mW	6 nm	No	No
SLD450T	450 nm	TO-56	10 mW	5 nm	No	No
SLD510B	510 nm	Butterfly, SM Pigtail	1.5 mW	8 nm	No	No
SLD635B	635 nm	Butterfly, SM Pigtail	3 mW	6 nm	No	No
SLD635T	635 nm	TO-56	10 mW	5 nm	No	No
SLD650B	650 nm	Butterfly, SM Pigtail	3 mW	6 nm	No	No
SLD650T	650 nm	TO-56	10 mW	5 nm	No	No
SLD770S	770 nm^c	Butterfly, SM Pigtail	5.5 mW	18 nm	No	No
SLD810S	810 nm^c	Butterfly, SM Pigtail	15 mW	30 nm	No	No
SLD830S-A10W	830 nm^c	Butterfly, SM Pigtail	10 mW (Min)	60 nm	No	No
SLD830S-A20W	830 nm^c	Butterfly, SM Pigtail	20 mW (Min)	55 nm	No	No
SLD830S-A10	830 nm^c	Butterfly, SM Pigtail	13 mW	20 nm	No	No
SLD830S-A20	830 nm^c	Butterfly, SM Pigtail	22 mW	20 nm	No	No
SLD840	840 nm^c	Butterfly, SM Pigtail	4 mW	70 nm	No	No
SLD840P	840 nm^c	Butterfly, PM Pigtail	4 mW	70 nm	No	No
SLD850S-A10W	850 nm^c	Butterfly, SM Pigtail	10 mW (Min)	60 nm	No	No
SLD850S-A20W	850 nm^c	Butterfly, SM Pigtail	20 mW (Min)	55 nm	No	No
SLD880S-A7	880 nm^c	Butterfly, SM Pigtail	7 mW	40 nm	No	No
SLD880S-A25	880 nm^c	Butterfly, SM Pigtail	25 mW	40 nm	No	No
SLD920S	920 nm^c	Butterfly, SM Pigtail	15 mW	65 nm	No	No
SLD920P	920 nm^c	Butterfly, PM Pigtail	15 mW	65 nm	No	No
SLD930S-A40W	930 nm^c	Butterfly, SM Pigtail	40 mW	45 nm	No	No
SLD930P-A40W	930 nm^c	Butterfly, PM Pigtail	40 mW	45 nm	No	No
SLD970S-A40W	970 nm^c	Butterfly, SM Pigtail	40 mW	50 nm	No	No
SLD970P-A40W	970 nm^c	Butterfly, PM Pigtail	40 mW	50 nm	No	No
SLD1050S	1050 nm^c	Butterfly, SM Pigtail	8 mW	50 nm	No	No
SLD1050P	1050 nm^c	Butterfly, PM Pigtail	8 mW	50 nm	No	No
SLD1050S-A60	1050 nm^c	Butterfly, SM Pigtail	60 mW	70 nm	No	No
SLD1050P-A60	1050 nm^c	Butterfly, PM Pigtail	60 mW	70 nm	No	No
SLD1220	1220 nm^c	Butterfly, SM Pigtail	5 mW	90 nm	Yes: 50 dB Isolation	No
SLD1220P	1220 nm^c	Butterfly, PM Pigtail	5 mW	90 nm	Yes: 50 dB Isolation	No
SLD1021S	1310 nm^c	Butterfly, SM Pigtail	12.5 mW	85 nm	No	S5FC1021S
SLD1018S	1310 nm^c	Butterfly, SM Pigtail	30 mW	45 nm	No	S5FC1018S S5FC1018P
SLD1018P	1310 nm^c	Butterfly, PM Pigtail	30 mW	45 nm	No	S5FC1018S S5FC1018P
SLD1310	1315 nm^c	Butterfly, SM Pigtail	30 mW	90 nm	Yes: 50 dB Isolation	No
SLD1310P	1315 nm^c	Butterfly, PM Pigtail	30 mW	90 nm	Yes: 50 dB Isolation	No
SLD1325	1325 nm^c	Butterfly, SM Pigtail	10 mW (Min)	100 nm (Min)	Yes: 30 dB (Min) Isolation	No
SLD1330	1325 nm^c	Butterfly, SM Pigtail	40 mW	90 nm	Yes: 50 dB Isolation	No
SLD1330P	1325 nm^c	Butterfly, SM Pigtail	40 mW	90 nm	Yes: 50 dB Isolation	No
SLD1410	1400 nm^c	Butterfly, SM Pigtail	5 mW	98 nm	Yes: 30 dB Isolation	No
SLD1410P	1400 nm^c	Butterfly, PM Pigtail	5 mW	98 nm	Yes: 30 dB Isolation	No
SLD1450S	1450 nm^c	Butterfly, SM Pigtail	25 mW	54 nm	No	No
SLD1450P	1450 nm^c	Butterfly, PM Pigtail	25 mW	54 nm	No	No
SLD1550S-A1	1550 nm^c	Butterfly, SM Pigtail	1.0 mW	110 nm	No	No
SLD1550P-A1	1550 nm^c	Butterfly, PM Pigtail	1.0 mW	110 nm	No	No
SLD1550S-A2	1550 nm^c	Butterfly, SM Pigtail	2.5 mW	90 nm	No	S5FC1550S-A2 S5FC1550P-A2
SLD1550P-A2	1550 nm^c	Butterfly, PM Pigtail	2.5 mW	90 nm	No	S5FC1550S-A2 S5FC1550P-A2
SLD1005S	1550 nm^c	Butterfly, SM Pigtail	22 mW	50 nm	No	S5FC1005S
SLD1550S-A40	1550 nm^c	Butterfly, SM Pigtail	40 mW	33 nm	No	No
SLD1550P-A40	1550 nm^c	Butterfly, PM Pigtail	40 mW	33 nm	No	No
SLD1610	1610 nm^c	Butterfly, SM Pigtail	27 mW	57 nm	No	No
SLD1610P	1610 nm^c	Butterfly, PM Pigtail	27 mW	57 nm	No	No

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.
For more information on how the center wavelength for our NIR SLDs is defined, please see the Specs tab on the NIR Superluminescent Diodes presentation.

Visible Superluminescent Diodes, TO-56 Can

Item #^a	Center Wavelength	Power	Forward Current (Max)	3 dB Bandwidth	Pin Code	Spectral Shape	Spatial Mode
SLD405T	405 nm	10 mW	110 mA	4 nm	H	Near Gaussian	Single Mode
SLD450T	450 nm	10 mW	180 mA	5 nm
SLD635T	635 nm	10 mW	60 mA	5 nm
SLD650T	650 nm	10 mW	60 mA	5 nm

All values are typical unless otherwise indicated.
Additional specifications are available by clicking on the blue icon.