UHG Series

ULTRAFAST HARMONIC GENERATOR FOR
FEMTOSECOND AND PECOSECOND LASER

  • High efficiency conversion
  • Reduced pulse broadening
  • Broadband optics for complete wavelength coverage
  • Highest output with Tsunami
  • Motorized tuning option

Spectra-Physics’ UHG series is a user-friendly Harmonic generation module capable of second, third, and fourth harmonic generation for ultrafast oscillators and options for pulse selection. The UHG series provides high-efficiency harmonic generation of femtosecond and picosecond oscillators such as the Spectra-Physics’ InSight®, Mai Tai® and Tsunami®.

he UHG Series for InSight provides virtually gap free tuning from 340 nm to 1300 nm when combined with the fundamental output. It provides high efficiency SHG (second harmonic) output that exceeds 40% efficiency and when combined with the InSight X3™, providing an average power of >800 mW at 450 nm. In addition, the new UHG Series for InSight is fully automated and allows for software control to tune both the fundamental and second harmonic wavelengths. Pulse selection is available from 340 nm to 1100 nm at repetition rates of single shot to 8 MHz.

The UHG Series for Mai Tai and Tsunami has been designed to handle greater than 4 W of average power and deliver efficiencies exceeding 40% for SHG (second harmonic), 10% for THG (third harmonic), and 4% for FHG (fourth harmonic). The pulse selector option inside the UHG head offers a SiO2 Bragg cell for the highest output powers and contrast ratio. The system is capable of pulse selecting from single shot to 8 MHz and is positioned before all harmonic stages to offer the most features in a single compact housing. The UHG series is a flexible system suitable for a variety of scientific applications requiring access to a wide spectrum of femtosecond or picosecond laser pulses.

Applications

Non-linear spectroscopy
Quantum optics
Biochemistry
Biophotonics
Microelectronics characterization
 
 Second Harmonic GenerationFundamentalSHG
Input Wavelength 680–1300 nm  
Output Wavelength 680–1300 nm 340–650 nm  
Conversion Efficiency (@ 450 nm/900 nm) 40%  
Power with InSight X32 2000 mW 800 mW  
 
Pulse Selection of Second HarmonicFundamentalSHG
Input Wavelength 680–1300 nm  
Output Wavelength 680–1300 nm 340–650 nm  
Conversion Efficiency (@450 nm/900 nm, 8 MHz) 15% >35%  
Power with InSight X32 2000 mW 800 mW  

1. Due to our continuous product improvements, specifications are subject to change without notice.
2. Input power >1.1 W at 900 nm.
3. InSight X3 specification 2 W at 900 nm.

   
Femtosecond Operation SHGSHG (in THG)2THGFHG  
Input Wavelength 680–1080 nm 836–968 nm  
Output Wavelength 340–540 nm 226–360 nm 209–242 nm  
Conversion Efficiency3 40% 25% 10% 4%  
Power with Mai Tai HP4 1000 mW 625 mW 250 mW 80 mW  
Power with Tsunami XP5 1080 mW 675 mW 270 mW 100 mW  
   
Picosecond OperationSHGSHG (in THG)2THGFHG  
Input Wavelength 680–1080 nm 836–968 nm  
Output Wavelength 340–540 nm 226–360 nm 209–242 nm  
Conversion Efficiency3 15% 10% 4% 0.1%  
Power with Tsunami HP5,7 435 mW 290 mW 87 mW 2.5 mW  
Pico HE Option 25% 20%  12% 1%  
Pico HE option with Tsunami HP5,7 725 mW  580 mW 348 mW 25 mW  
   
Input Wavelength 680–1080 nm  
Diffraction Efficiency 35% @ 800 nm, 8 MHz  
Power with Mai Tai HP4 88 mW  
Power with Tsunami HP5 95 mW  
Contrast Ratio 300:1  
Repetition Rate Adjustable: 8 MHz to single shot  
   
Femtosecond OperationSHGSHG (in THG)2THG  
Output Wavelength 340–540 nm 226–360 nm  
Conversion Efficiency3,6 10% 8% 5%  
Power with Mai Tai HP4 8.5 mW 7 mW 4 mW  
Power with Tsunami HP5 9.5 mW 7.5 mW 4.5 mW  
Picosecond OperationSHGSHG (in THG)2THG  
Output Wavelength 340–540 nm 226–360 nm  
Conversion Efficiency3,6 3% 2.5% 1%  
Power with Tsunami HP7 3 mW 2.5 mW 1 mW  

1. Due to our continuous product improvements, specifications are subject to change without notice.
2. SHG when THG is detuned.
3. Conversion efficiency given 800 nm for SHG and THG, 900 nm for FHG. Minimum input power of
    2 W required for specified efficiencies.
4. 2.5 W @ 800 nm, 80 MHz.
5. 2.7 W @ 800 nm, 80 MHz.
6. In relation to diffracted fundamental power @ 8 MHz.
7. 2.9 W @ 800 nm, 80 MHz, 1-2 ps.

UHG Series Dimensions

Similar Products

Product Description
Inspire
Optical parametric oscillators with ultra-wide spectral coverage from UV to IR
Inspire Blue
Automated femtosecond/picosecond harmonic generators
Inspire IR
Automated high power infrared optical parametric oscillators for Ti:Sapphire lasers

Supporting Products

Product Description
InSight X3
Widely tunable ultrafast laser system for multiphoton imaging
Mai Tai DeepSee
Broad tuning range, built-in dispersion compensation for highest peak power
Mai Tai
Broad tuning range and ultra short pulse width
Tsunami
Flexible, high performance ultrafast Ti:Sapphire oscillators