General Characteristics1, 12

Mai Tai eHP DS Mai Tai HP DS Mai Tai BB DS Mai Tai XF-1 DS
Peak Power2 >425 kW >266 kW >211 kW >145 kW
Pulse Width2, 3, 9 <70 fs <100 fs <80 fs <70 fs
Tuning Range4 690-1040 nm 690-1040 nm 710-990 nm 710-920 nm
Average Power2 >2.4 W >2.1 W >1.35 W >800 mW
Peak Power, Alternative Wavelengths5 >56 kW at 690 nm
>217 kW at 710 nm
>217 kW at 920 nm
>34 kW at 1040 nm
>56 kW at 690 nm
>150 kW at 710 nm
>150 kW at 920 nm
>34 kW at 1040 nm
>91 kW at 710 nm
>91 kW at 920 nm
>35 kW at 990 nm
>64 kW at 710 nm
>64 kW at 920 nm
Beam Roundness2 0.9-1.1
Astigmatism2 <25%
Repetition Rate2, 6 80 MHz ±1 MHz
Beam Pointing Stability <50 µrad/100 nm
Noise2, 7 <0.15%
Stability8 <±1%
Spatial Mode2 TEMoo, M2 <1.1
Polarization2 >500:1 horizontal
Beam Divergence2 <1.2 mrad
Beam Diameter (1/e2)2 <1.2 mm
Standard Dispersion Compensation Range10 690 nm: -22,500 fs2 to -41,700 fs2
800 nm: -8,900 fs2 to -24,500 fs2
1040 nm: 0 fs2 to -9,600 fs2

Physical Characteristics

Mai Tai eHP DS Mai Tai HP DS Mai Tai BB DS Mai Tai XF-1 DS
Size (L x W x H) 35.44 x 13.79 x 5.78 in (90.02 x 35.03 x 14.68 cm)
Weight 106 lbs (48 kg)
Umbilical Length 10 ft (3 m)

Utility Requirements

Mai Tai eHP DS Mai Tai HP DS Mai Tai BB DS Mai Tai XF-1 DS
Voltage 110 VAC ±10% / 220 VAC ±10%
Current Power Supply and Closed-loop Chiller: <10 A/<6 A
Frequency 60 Hz/50 Hz

Environmental Requirements11

Mai Tai eHP DS Mai Tai HP DS Mai Tai BB DS Mai Tai XF-1 DS
Altitude Up to 2000 m
Temperature, Operating 20-25°C
Relative Humidity, Operating Maximum 75% non-condensing up to 25°C
Temperature, Storage 15-35°C
Relative Humidity, Storage <65% for 15-35°C
Cooled Water Temperature in Closed-loop Chiller 21°C typical11


  1. Due to our continuous product improvement program, specifications may change without notice.
  2. Specification applies to 800 nm only.
  3. A sech2 pulse shape is used to determine the pulse width as measured with a Newport PulseScout® autocorrelator.
  4. Mai Tai is also available with a fixed, factory preset wavelength within the wavelength range noted.
  5. Specifications apply to operation at the wavelength noted.
  6. Laser operation is specified at a nominal repetition rate of 80 MHz.
  7. Specification represents rms noise measured in a 10 Hz to 10 MHz bandwidth.
  8. Percent power drift in any 2-hour period with <±1°C temperature change after a 1-hour warm up.
  9. Measured after external pulse compression, or measured at the sample on a system configured with the DeepSee.
  10. For optional range down to 0 fs2, contact Spectra-Physics.
  11. Avoid obstructing the air exhaust grills which will result in the recirculation of hot exhaust air. Cooling air enters th rough the front panel and exits through the rear fan apertures.
  12. The Mai Tai DeepSee is a Class IV - High-Power Laser, whose beam is, by definition, a safety and fire hazard. Take precautions to prevent exposure to direct and reflected beams. Diffuse as well as specular reflections can cause severe skin or eye damage.



The Mai Tai® DeepSee™ Ti:Sapphire oscillator with our patented automated dispersion compensation1 has been specifically optimized for use in multiphoton microscopy. The Mai Tai DeepSee laser delivers the industry’s highest peak power to the sample thus maximizing the fluorescence signal. In addition, it offers over 2.4 W of average power and 350 nm (690-1040 nm) in useable tuning range.

Exceptional Stability and Versatility

The Mai Tai DeepSee oscillator’s reliability is maintained through the ultra-stable regenerative mode locking technique developed by Spectra-Physics. With hands free, drop-out free wavelength tuning, excitation profiles can be quickly collected with just the click of a mouse. StabiLok® real-time monitoring technology also enhances system reliability by providing excellent beam pointing stability and minimal average power fluctuations, as well as eliminating wavelength drift. These two features make the Mai Tai DeepSee oscillator the most reliable and most versatile hands-free laser currently on the market.

Integrated Dispersion Pre-Compensation for Deep Tissue Imaging

With the Mai Tai DeepSee oscillator, deeper penetration depths can be achieved without the risk of sample
damage from increased average powers. When ultrafast laser pulses are transmitted through optical materials (i.e. windows, lenses, and nonlinear crystals), the added dispersion broadens the pulse. This pulse broadening has a negative affect on the fluorescence signal obtained. The Mai Tai DeepSee option corrects in advance for the optical setup dispersion through pre-compensation, which maximizes the observed fluorescence signals. Sample damage could prevent the average power from being increased. For these cases, high peak power is the most effective way to increase the fluorescence.

Compatible Power Sensors

To verify and analyze the output power of your Mai Tai DeepSee laser, we recommend the Ophir 3A (7Z02621) thermal power sensor and Centauri laser power meter.  Additional information on this laser measurement equipment can be found on the ophiropt.com website.  Other Ophir sensors and meters may also be suitable for the Mai Tai DeepSee, depending on application. Ophir also works with laser system developers to achieve embedded beam diagnostics to monitor system performance as an OEM solution.