Products HomeLaser-Pumped Phosphor Broadband Light Source
- -10 dB Wavelength Range: 490 to 625 nm
- Open-Loop, Closed-Loop, and External Trigger Modes
- Long 10 000 Hour Lifespan
- SMA905 Fiber-Coupled Output
M112L01
Ø200 µm, 0.22 NA,
MM Fiber Patch Cable
SLS701
Laser-Pumped Phosphor Light Source
(Fiber Patch Cable Sold Separately)
The settings and controls on the front panel are also accessible remotely via the software GUI.
U.S. Patent
10,317,046
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The side panel features a filter holder for a Ø1" or Ø25 mm spectral filter with a maximum thickness of 6.5 mm.
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The measured spectral power distribution for the SLS701 Light Source. The blue-shaded region indicates the lamp's -10 dB power operating wavelength range.
Features
- Laser-Pumped Phosphor Emission Over 490 - 625 nm Wavelength Range
- 25 mW Output (Open-Loop Mode)
- 0.03% Per Hour and <0.1% Per °C Output Power Drift (Closed-Loop Mode)
- Accepts In-Line Ø1" or Ø25 mm Spectral Filter
- SMA905 Fiber-Coupled Output (Fiber Patch Cable Sold Separately)
- Location-Specific Power Cord Included
Thorlabs' SLS701 Laser-Pumped Phosphor Light Source (U.S. Patent 10,317,046) provides stable illumination from 490 nm to 625 nm. The internal 445 nm pump laser is focused into a very small spot on a single-crystal phosphor, generating incoherent, broadband emission with a small etendue. This results in laser-level, high-radiance output at the fiber connector. A photodiode measures off-axis emission to create a feedback loop for closed-loop operation and increased power stability over time and temperature changes. The emitted light is coupled into an SMA905 bulkhead for connecting to a fiber patch cable. Refer to the diagram below for additional details. A patch cable is not included; recommended cables are available for purchase below.
The front panel controls and LCD screen offer full control of the source power, light intensity, open- and closed-loop operation modes, and enabling or disabling external trigger inputs. The back panel features BNC connectors for external triggering and power modulation inputs, as well as a monitor output and USB port. The software GUI available for download on the Software tab offers full remote control mirroring the functionality available on the front panel. Command line operation is also available using USB connectivity and a terminal emulator or a user-created program.
The right side panel features a filter tray for Ø1" or Ø25 mm spectral filters selected by the user, as shown in the photo to the upper right. This optional filter is located in the beam path just before the fiber coupling lens, as illustrated in the diagram below.
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Architecture of the SLS701 Laser-Pumped Phosphor Light Source
| Key Specificationsa | |
|---|---|
| Wavelength Range | FWHM: 495 - 575 nm -10 dB Power: 490 - 625 nm |
| Maximum Brightness | >7 W/mm2/sr (50 µm, 0.22 NA Fiber)b |
| Output Power | 25 mW (Open Loop)c |
| Modulation Bandwidth | 160 kHz (Open Loop) 2 kHz (Closed Loop) |
| Thermal Drift | <0.1%/°C (Closed Loop) |
| Drift/Hour | 0.03% (Closed Loop) |
| Device Lifetime | 10 000 Hoursd |
| Item # | SLS701 |
|---|---|
| Wavelength Range | FWHM: 495 - 575 nm -10 dB Power: 490 - 625 nm |
| Output Coupling | Fiber Coupled, SMA905 Connector |
| Maximum Brightness | >7 W/mm2/sr (50 µm, 0.22 NA Fiber)a |
| Output Power | 25 mW (Open Loop)b |
| Modulation Bandwidth | 160 kHz (Open Loop) 2 kHz (Closed Loop) |
| Output Non-Linearity | <2% |
| Stability | 0.05% (Closed Loop) |
| Thermal Drift | <0.1%/°C (Closed Loop) |
| Drift/Hour | 0.03% (Closed Loop) |
| Device Lifetime | 10 000 Hoursc |
| Power Supply Voltage | 100 - 240 VAC, 50 - 60 Hz |
| Operating Temperature Range | 0 to 35 °C |
| Storage Temperature Range | -15 to 65 °C |
| Dimensions (L x W x H) | 346.9 mm x 289.4 mm x 150.0 mm (13.66" x 11.39" x 5.91") |
| Mass (Weight) | 5.6 kg (12.3 lbs) |
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SLS701 Back Panel
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SLS701 Front Panel
| Front Panel | Back Panel | ||
|---|---|---|---|
| Callout | Description | Callout | Description |
| F1 | Operation Mode Switch | B1 | BNC Port for External Triggering: 5 V CMOS |
| F2 | Output Power Adjustment Knob | B2 | BNC Port for Modulation Input: 0 to 5 V |
| F3 | External Port Mode Switch | B3 | BNC Port for Monitor Out: 0 to 5 V |
| F4 | Light On/Off Button | B4 | USB Type-B Port |
| F5 | Light On/Off State LED | B5 | Main Cooling Fan |
| F6 | SMA Fiber Port | B6 | AC Power Cord Connector |
| F7 | Power Button with LED Indicator | B7 | Fuse Drawer |
| Recommended System Requirements | |
|---|---|
| Operating System | Windows® 7 SP1 (32-Bit, 64-Bit) with KB3020369 and KB3125574; Windows 10 (32-Bit, 64-Bit); Windows 11 (64-Bit) |
| Processor (CPU) | 1 GHz or Higher |
| Memory (RAM) | 2 GB |
| Hard Drive | 25 MB (Min) of Available Disk Space |
| Interface | Free USB 2.0 Port |
Software
Version 1.1.1
This software package provides a GUI to control the SLS701 Light Source. To download, click the button below.
SLS701 GUI Software
The SLS701 GUI Software provides full control over the SLS701 Laser-Pumped Light Source, allowing the user to power the source on and off, adjust the intensity, toggle the operation mode between open and closed loop, and activate/deactivate the ports on the rear panel.
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Zoom- 445 nm Fiber-Laser-Pumped Phosphor Light Source
- 490 - 625 nm Wavelength Range (-10 dB Power)
- Open-Loop, Closed-Loop, and External Trigger Modes
- Front Panel, Software GUI, or Command Line Operation
The SLS701 Laser-Pumped Phosphor Light Source outputs fiber-coupled light from 490 nm to 625 nm (-10 dB power). The source can be fully operated using the front panel LCD and controls or remotely via the USB connector on the rear. Remote control can be performed using a PC with the software GUI or via a command line interface. External triggering, modulation input, and monitor output are available on the rear panel. A fiber patch cable is not included; a variety of recommended compatible cables are available below.
Zoom| Recommended Fiber Patch Cables | ||||
|---|---|---|---|---|
| Item # | NA | Core Size | Output Powera | Fiber Type |
| M14L01 | 0.22 | Ø50 µm | 2.5 mW | Low OH MM Fiber |
| M112L01 | 0.22 | Ø200 µm | 25 mW | Solarization-Resistant MM Fiber |
| M113L01 | 0.22 | Ø400 µm | 33 mW | |
| M38L01 | 0.39 | Ø200 µm | 60 mW | Low OH MM Fiber |
| M28L01 | 0.39 | Ø400 µm | 107 mW | |
The SLS701 light source does not include a fiber patch cable, but it is aligned and optimized for use with an M112L01 fiber patch cable. The M112L01 is a solarization-resistant multimode fiber patch cable that has SMA connectors, a Ø200 µm core, and 0.22 NA. Other fiber patch cables with SMA connectors can also be used with the SLS701 light source, but output power may vary. The table to the right provides the typical output powers for the source when used with a variety of different fiber patch cables.
 Laser-Pumped PhosphorBroadband Light Source |