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Ultra-fast Tripler, Time-PlateTM Technology

-- simpler is better!

We now provide a complete line of ultrafast harmonic generators for Ti:S lasers. With the addition of the ultrafast fs and ps triplers and FHGs, U-Oplaz has become one power source for wavelength conversions.
The new family of high efficiency triplers consists of a complete line of fs and ps triplers for both Ti:S amplifier and Ti:S oscillator. They are manufactured by U-Oplaz Technologies Inc. based on the new invention of Time Plate™ (US patent # 5,852,620) and a new time delay device (patent pending hold by U-Oplaz Technologies, Inc.).
The new ultrafast triplers are the most compact and user friendly, while setting the record of the highest efficiency. The steps of the separation and recombination of the fundamental and SHG beams in other ultrafast triplers are no longer needed and the spatial overlap of the two beams are automatically obtained with the Time Plate™design. The smooth time delay control adds more value to the triplers for your application. See the comparison here.
The latest TP-2000B design could triple Ti:Sapphire output from 680 nm ~1,100nm with single set of optics.
How short the tripling pulse width can be generated by U-Oplaz抯 TP triplers and what is the influence of the Timeplate to the pulse width of the fundament and SHG pulses? Check here for the answer.
With the addition of TP-1A FHG and TP-2000B FHG we could offer now completely wavelength coverage from 190nm to 1050nm.
 

Time PlateTM in the fs Tripler

TimePlateSo far all other fs triplers use a delay line for time compensation. The delay line consists of two beam splitters (or diachronic mirrors), several mirrors, and a translation stage. It works in three steps:
(1) the separation of two laser beams w and 2w; 
(2) the two beams traveling through different path and the time delay between them being adjusted by moving the translation stage; 
(3) the recombination of the two beams. 
The drawbacks of delay line are that it is complicated, expensive, large size, and very difficult to align.
The Time PlateTM is invented to overcome the drawbacks of delay line. A Time Plate (TP) consists of a specially designed birefringence crystal. After the SHG stage, a time delay between the two beams w and 2w, which are polarized perpendicularly to each other, is generated. The time delay is compensated after the two beams travel through the time plate since they have different refractive indices no and neff. The delay time is tunable by rotating the angle of the time plate around the z-axis to change the effective index neff. One degree rotation changes the time delay about 10 fs for a 2 mm thick calcite crystal.  In the fs triplers, there is no beam separation and recom-bination and the beams w and 2w keep collinear so the spetial overlap are automatically achieved. The better method for spatial and time overlap makes the fs triplers to be very user friendly and more reliable.