• Quantum Physics
    • Atom cooling
    • Magneto-optic trapping
    • Bose-Einstein condensates
    • Atomic clocks
  • High-resolution UV spectroscopy
  • Tunable UV experiments


Optical Characteristics

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

Physical Characteristics

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.


Patented DeltaConcept® Ring Cavity Design

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. The DeltaConcept design requires two cavity mirrors (as opposed to four in a bowtie resonator) which minimizes losses for maximum output power.

WaveTrain 2 Stability

  • Hermetically Sealed Resonant Ring Cavity for Crystal Longevity: The WaveTrain 2 resonant ring cavity is housed in a massive metal block and hermetically sealed with an O-ring and metal cover plate. Hygroscopic material inside of the housing protects against humidity. The doubling crystal is temperature stabilized and nitrogen purging is available.
  • Adjustment Knobs External to Sealed Cavity: There is no need to remove the lid of the hermetically sealed cavity during adjustment. This prevents cavity misalignment that can occur with lid closure.
  • Isolation Legs: The WaveTrain 2 is mounted onto 3-point ceramic ball isolation legs to decouple the system from laboratory vibrational noise.

Auto Locking Frequency Loop

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.

Maximum Wavelength Flexibility

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.

Fourth Harmonic Generation

The low noise output of the WaveTrain 2 enables stable fourth harmonic generation by pumping a second WaveTrain 2. One hour power measurement of the output of a WaveTrain 2 pumped by a WaveTrain 2 is shown.