Ocean Optics - Inventor of the World's First Miniature Spectrometer

Miniature Deuterium Tungsten Halogen Sources

~200-1100 nm Spectral Range

The DT-MINI-2 (top) and DT-MINI-2-GS Deuterium Tungsten Halogen Light Sources combine the continuous spectrum of an RF-excited deuterium UV light source and a tungsten halogen VIS-NIR light source in a single optical path. The combined-spectrum sources produce stable spectral output from ~200-2000 nm in a compact package.

0.5 mm Aperture: More Powerful Output

The original DT-MINI was our first foray into a compact and versatile UV-NIR light source, and is still a great choice for a range of applications and measurements. The advantage of the newer DT-MINI-2 and DT-MINI-2-GS is that they use a bulb with a 0.5 mm diameter aperture, which results in more focused, uniform beam coupling to our optical fibers.

DT-Mini-2 Spectral Output

Shutter Version

The DT-MINI-2-GS Deuterium Tungsten Halogen Light Source also utilizes the bulb with the 0.5-mm diameter aperture. Its added feature is a shutter for blocking the light path, which can be controlled via a manual switch or TTL. There is also a switch for turning the deuterium source on and off, and one for turning the tungsten halogen source on and off; each switch can be used independently of the other.

Rack-mount Version

Rack-mount versions of DT-MINI-series lamps are available. These sources can be hard-wired to a spectrometer channel and racked into a Dual Box, Rack Box or Desktop Box with other accessories.

Specifications

Specification	DT-MINI-2	DT-MINI-2-GS
Dimensions:	153.4 mm x 104.9 mm x 40.9 mm	140 mm x 50 mm x 125 mm
Weight:	330 g	475 g
Wavelength range:	200-410 nm (deuterium); 360-2000 nm (tungsten halogen)	200-410 nm (deuterium); 360-2000 nm (tungsten halogen)
Power consumption:	350 mA @ 12 VDC	350 mA @ 12 VDC
Output:	3.8 watts (deuterium); 1.2 watts (tungsten halogen)	3.8 watts (deuterium); 1.2 watts (tungsten halogen)
Stability:	~1.0% peak-to-peak (over 4 hours) after 30-minute warm-up	~1.0% peak-to-peak (over 4 hours) after 30-minute warm-up
Time to stable output:	10 minutes (deuterium); 1 minute (tungsten halogen)	10 minutes (deuterium); 1 minute (tungsten halogen)
Bulb life:	~1500 hours (deuterium); 1500 hours (tungsten halogen)	~1500 hours (deuterium); 1500 hours (tungsten halogen)
Ignition delay:	<2.0 seconds (delay for cold start-up may be longer)	<2.0 seconds (delay for cold start-up may be longer)
Connector:	SMA 905	SMA 905

Ordering Information

Item	Description	Price
DT-MINI-2	Miniature combination deuterium and tungsten halogen light source (~200-2000 nm)	$1732
DT-MINI-2-GS	Miniature combination deuterium and tungsten halogen light source with shutter option and function control switches	$2111
DT-MINI	Miniature combination deuterium and tungsten halogen light source (~200-2000 nm)	Call for Price
DT-MINI-2-B*	Spare bulb for DT-MINI-2 and DT-MINI-2-GS	$634
DT-MINI-B*	Spare bulb for DT-MINI and DT-MINI-GS	$634

* The DT-MINI-2-B Bulb can only be used in the DT-MINI-2 and DT-MINI-2-GS sources. Likewise, the DT-MINI-B Bulb can only be used in the DT-MINI and DT-MINI-GS.

Note: The overall power output across the combined spectrum is very stable -- with drift about 1.0% per hour. The tungsten source is very stable at <1.0% per hour. As a plasma emitter, the deuterium source is less stable. Changes within the plasma lead to changes in the light coupled in the fiber and drive can vary by wavelength.

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