WaveTrain® 2


  • Input wavelength range 410 to 1600 nm
  • Only two pre-mounted mirrors for quick change of wavelength ranges
  • Low cavity losses and high doubling efficiencies >35%

WaveTrain 2 CW Frequency Doubler

WaveTrain® 2 is an advanced stand-alone device that provides simple frequency doubling of single frequency CW laser beams. With greater efficiency than traditional intra-cavity or extra-cavity methods, this product can be used to generate the second harmonic of the output of the Matisse® 2.

WaveTrain 2 utilizes a ring cavity to achieve efficiencies greater than 35%. Unlike conventional bow-tie cavities, WaveTrain 2 is based on a patented triangle-shaped cavity configuration called the DeltaConcept®, which allows the cavity length to be adjusted with no effect whatsoever on output beam position, direction or beam astigmatism.

Output stability is further enhanced by the use of a lightweight piezo-activated prism to optimize the cavity length, making the WaveTrain 2 especially resistant to vibrations and acoustic noise. This inherent beam stability enables the control hardware to automatically lock the cavity for maximum doubling efficiency during both fixed frequency and scanned operation.

Ease of access and the use of pre-mounted modular optics and crystals insure maximum wavelength flexibility, enabling the WaveTrain 2 to be operated effectively over the entire 410–1600 nm input wavelength range.


High-resolution UV spectroscopy
Atom cooling and magneto-optic trapping
Tunable UV experiments
Bose-Einstein condensates
Atomic clocks
Wavelength Range 670–1050 nm 550–780 nm 410–550 nm 1050–1600 nm  
Automated Scan Range >40 GHz >65 GHz >65 GHz >40 GHz  
Phase-Match Tuning2, 3 ±25 nm @ 800 nm ±15 nm @ 660 nm Contact factory Contact factory  
Maximum Scan Rate 10 GHz/sec (fundamental)  
Input Power  
300–600 mW >6% >4% 4–10% >12%  
600–1300 mW >15% >10% 4–10% >12%  
1300–3000 mW >25% >15% 4–10% >12%  
3000–10000 mW >35% >15% 4–10% >12%  
Pump Laser TEM00, M2<1.1, single frequency laser
Linewidth <10 MHz, linear polarized
Ambient Conditions Constant temperature in the 20–25°C range  
Laboratory Vibrational isolated optical table, dust-free air (flow box)  
Voltage 115/230 V, single phase, 50/60 Hz  
Size (L x W x H) 19.88 x 11.02 x 8.43–9.45 in (505 x 280 x 214–240 mm)  

1. Due to our continuous product improvement program, specifications may change without notice.
2. Phase-match tuning is defined by an intensity reduction of 50% in the SHG.
3. Crystal cut wavelength may vary by 1%.
4. Specifications for 670–1050 nm and 550–780 nm tuning range only with Matisse Ti:Sapphire and dye lasers.

WaveTrain Dimensions

WaveTrain 2 laser dimensions

Similar Products

Product Description
Sum and difference frequency mixer for tunable cw lasers

Supporting Products

Product Description
Matisse C
Compact ultra-narrow linewidth Ti:Sapphire tunable ring laser
Matisse 2
Narrow linewidth tunable ring dye or Ti:Sapphire lasers
Millennia eV
Highest power 532 nm pump lasers, 
up to 25 W
High sensitivity thermal laser sensors – 2 mW to 12 W