Spectra-Physics’ ® UHG series is a user-friendly Ultrafast Harmonic Generator (UHG) module capable of second, third, and fourth harmonic generation for femtosecond and picosecond oscillators such as the Spectra-Physics InSight®, Mai Tai® and Tsunami®. The UHG series is also available with optional pulse selection and automated tuning.
Second Harmonic Generation | Fundamental | SHG |
---|---|---|
Input Wavelength | 680-1300 nm | |
Output Wavelength | 680-1300 nm | 340-650 nm |
Conversion Efficiency (@ 900 nm, 80 MHz) | 40% | |
Power with InSight X3+/X32 | 3000/2000 mW | 1200/800 mW |
Pulse Selection | Fundamental | SHG |
---|---|---|
Wavelength | 680-1100 nm | 340-650 nm |
Diffraction Efficiency (@ 900 nm, 8 MHz) | 35% | |
Power with InSight X3+/X32 | 107/71 mW | 15/10 mW |
Footnotes:
Femtosecond Operation | SHG | SHG (in THG)2 | THG | FHG |
---|---|---|---|---|
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 HP5 | 1080 mW | 675 mW | 270 mW | 100 mW |
Picosecond Operation | SHG | SHG (in THG)2 | THG | FHG |
---|---|---|---|---|
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 Efficiency8, 10 | 40% | ||
Power with Mai Tai HP4, 10 | 100 mW | ||
Power with Tsunami HP5, 10 | 108 mW | ||
Contrast Ratio8, 9 | 300:1 | ||
Repetition Rate | Adjustable: 40 MHz to single shot |
Femtosecond Operation | SHG | SHG (in THG)2 | THG |
---|---|---|---|
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 Operation | SHG | SHG (in THG)2 | THG |
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 |
Footnotes:
The 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 second harmonic generation (SHG) output that exceeds 40% efficiency when combined with the InSight X3™. The UHG series for InSight can be fully automated and tunes both the fundamental and second harmonic wavelengths. Pulse selection is available from 340 nm to 1100 nm at repetition rates from single shot to 40 MHz. The pulse selector can be used in high contrast ratio mode, or high efficiency mode depending on the needs of the experiment. For both modes of operation, the pulse selector module is positioned before all harmonic stages to offer the highest contrast ratio.
The UHG Series for Mai Tai and Tsunami has been designed to handle input power levels of more than 4 W and deliver efficiencies exceeding 40% for SHG. The UHG series is a compact, flexible system that is easy to use and suitable for a broad range of scientific applications.
To verify and analyze the output power of yourUHG laser, we recommend the Ophir 3A-PF-12 (7Z02720) 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 UHG, depending on application. Ophir also works with laser system developers to achieve embedded beam diagnostics to monitor system performance as an OEM solution.