TEMA-DUO. Yb-doped Solid-State Femtosecond Oscillator with Built-in SHG

Ultrafast ytterbium-doped solid-state laser with 1050 nm output having a built-in second harmonic generator unit with 525 nm output.
Central wavelength 1050 nm 525 nm 1050 nm 525 nm 1050 nm 525 nm
Output average power >5 W >2 W >7 W >3 W >12 W >6 W
Output pulse duration1) <100 fs <150 fs
Pulse repetition rate (fixed) 80 +/- 2 MHz
Pulse energy >60 nJ >25 nJ >85 nJ >35 nJ >150 nJ >75 nJ
Beam mode TEM00
M^2 <1.2
Beam diameter (at 1/e^2) 1050 nm 1+/-0.2 mm 1.8+/-0.2 mm
Beam diameter (at 1/e^2) 525 nm 2+/-0.2 mm
Output polarization at 1050 nm linear, horizontal
Output polarization at 525 nm linear, vertical
Beam divergence at 1050 nm <1.8+/-0.3 mrad <1+/-0.3 mrad
Beam divergence at 525 nm <0.5+/-0.1 mrad
Beam asymmetry at 525 or 1050 nm <10%
Beam astigmatism at 525 or 1050 nm <10%
Long-term stability2) <0.3% rms
Cold start warm-up time <20 min
Cooling requirements
Laser head closed-loop chiller included
Power supply air cooled
Physical dimensions (L x W x H)
Laser head dimensions 496 × 255 × 133 mm 513 × 223 × 139 mm
Laser control unit dimensions 180× 170× 60 mm
Umbilical length 1.8 m
Environmental and utility specifications 
Operating temperature 18-28 °C
Relative humidity <60%, non-condensing
Voltage single-phase; 100-240 VAC; 50/60 Hz
Power consumption <1 kW
1) - a sech2 pulse shape is used to determine the pulse duration. Measured with Avesta AA-20DD interferometric autocorrelator;
2) - after 30 min warm-up with cold start, during 12-hour continuous operation under equal room temperature conditions using recommended stabilized closed-loop chiller with proper capacity.
The TEMA-DUO is a further development of the TEMA Yb solid-state laser platform incorporating a built-in second harmonic generation module. Short pulse duration and high average power of the fundamental radiation allow reaching SHG conversion efficiency over 40%.
The TEMA-DUO is available in three basic models: the TEMA-DUO-100, TEMA-DUO-150 and TEMA-DUO-150-HP. The main difference between the two is the difference in output pulse duration and output power: <100 fs for the TEMA-DUO-100, <150 fs for the TEMA-DUO-150 and TEMA-DUO-150-HP. Regardless of its model name, each TEMA-DUO comprises a pump diode assembly with a compact control and monitoring unit, a laser cavity and a special optical commutator, which allows getting either full power of the fundamental beam, or two simultaneous outputs at 1050 and 525 nm. The fundamental and SH pulses have the same repetition rates and the pulse trains are completely in sync. Two synchronous outputs of the TEMA-DUO provide the capability for nonlinear optics research with high temporal resolution in a single budget-friendly system.
High output power of the SHG in the visible range opens up the possibility to use the TEMA-DUO as an effective pump source for parametric oscillators (such as the TOPOL systems), as well as for Ti:Sapphire pumping (the Tricolor multichannel system), replacing the pricey CW DPSS pump lasers while providing additional femtosecond channel of optical radiation in the visible range. It is also possible to use the fundamental beam to pump and additional CrF femtosecond Cr:F laser system. Thus possible laser combinations are rather flexible and may be requested on custom basis.

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