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The Stratus™ line of lasers is a fully CDRH compliant series of high-performance, circularized laser diode modules. The user looking to incorporate a laser into a flow cytometer or other demanding application will find the Stratus™ laser a breeze to use. Whatever your need is for laser light in the visible and ultraviolet region (660nm, 642nm, 488nm, 473nm, 445nm, 405nm, and 375nm) you will find a solution in the Vortran Laser Technology, Inc. family of lasers. All Stratus™ lasers are single mode TEM00 lasers, all come equipped with digital modulation capability to 200 MHz (<2ns rise time) with the engineering improvements and enhancements that reflect the accomplishments of a 2nd generation laser diode module. A major improvement in the Stradus family of lasers over other diode laser modules has to do with power stability over time. The Stradus laser exhibits unparalleled power stability of better than 0.5% over a 24 hour period. Much of this improved stability can be attributed to the patent pending design of the optics module inside the Stradus. All optics, including all elements of the feedback loop, are sealed in an enclosed chamber with controlled micro-environment. From the moment that the Stradus comes off the manufacturing line to the end of life of the actual laser diode the Stradus will afford the user extremely stable output power with time. Another key feature of the Stradus is the fact that the design of all parts of the product were enhanced to reduce any effects from static electricity (laser diodes are highly susceptible to ESD damage). The Stradus has been designed and tested to ESD levels exceeding 20KV.
View Technical Specifications
Overview of Laser Head
(Click here for larger view)
From the figure above, one can see the optics module and how it is secured to the mounting base and is sealed from the contaminant producing electronics (PCBA’s as well as the Thermal Electric cooling and heating system). All electronics necessary to control and produce the laser light are contained within the laser head on 4 small PC boards. A user can merely hook up a 12 volt DC source to the miniature D connector on the back of the laser head and turn the laser on and off manually. The user can, if desired, also connect a PC to the laser head through the USB connector (or through the RS-232 signals available at the miniature D connector) – thus controlling all laser functions from the computer interface. The user can, of course, use the remote control box to conveniently supply the 12V DC power to the laser head and also supply a convenient means to interface the computer via the RS-232 as well as the other signals and functions discussed in the section on the remote control box.
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