Each TLS unit sold to a customer is tested prior to shipping to confirm that the unit meets factory standards. The customer receives this test report with his/her TLS unit for future reference. The final test data included with each unit includes:

• Spectral Output Irradiance measured from 350-1650 nm with both 280 µm and 600 µm slits installed
• Beam Spot Size and Beam Divergence Angle measured with both 280 µm and 600 µm slits installed
• Temporal Stability measured for 1 minute and 10 minute operating periods
• Beam Uniformity measured with both 280 µm and 600 µm slits installed at 450, 550, and 650 nm output
• Wavelength Accuracy measured with the TLS output set to 450, 500, 650, 750, 850, and 1064 nm

The TLS includes TRACQ-BASIC-V066 : the newest, most advanced version of Oriel’s TracQ Instrument Control and Data Acquisition software. Using the Cornerstone 130 Monochromator 's USB or RS232/GPIB (IEEE-488) port, TracQ switches the filter wheel position to the correct order sorting filter and the monochromator to the proper grating and position based on the TLS wavelength output chosen by the operator. When used with a compatible Newport power meter and detector, TracQ is a complete radiometry system control software, capable of displaying real time data acquisition. No prior knowledge of software programming is necessary to install or operate TracQ. Some of the scans made possible with the TLS by TracQ include:

• Time Interval
• Lamp Radiometry
• Optical Power
• Absorbance
• Transmittance

TracQ Basic is compatible with Windows 7 (32-bit or 64-bit) operating systems.

The TLS system comes mounted as a single unit to a mounting plate. Optics are pre-aligned. All necessary interconnection cables are included and all of the hardware is mounted securely to the TLS baseplate.

When wavelength scanning over a wide spectral band, it is important to use order sorting filters in order to prevent second order wavelength emission. This ensures true monochromatic light is output by the TLS and detected by the photodetector. The TLS incorporates a Motorized Filter Wheel. This filter wheel utilizes four 1.0 inch (25.4 mm) diameter order sorting filters to minimize second order wavelengths from entering the monochromator and being falsely detected as signal light by the photodetector.

The TLS system uses fixed slits which offer the highest repeatability and accuracy. We include 280 µm and 600 µm slits. Other slit sizes are available here . Choose the optional 50 µm 77219 slit for 0.7 nm resolution. Determining which slit width to use is based on the tradeoff between light throughput and the resolution required for measurement. A larger slit width allows for more light throughput. However, more light throughput results in poorer resolution. When choosing a slit width to operate the monochromator at, both the input and output ports must be set to the same slit width.

The TLS system includes a manual iris, adjustable from 2-36 mm diameter, in the light output path. This iris is a convenient for preventing detector saturation. By reducing the size of the output aperture to reduce output light intensity, a neutral density filter and mechanical coupling are not necessary.