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Femtosecond Optical Parametric Amplifier (OPA)![]()
Y-Fi™ OPA Related Items ![]() Please Wait
![]() Click to Enlarge The Y-Fi OPA amplifies a coherently generated white-light seed in a nonlinear crystal, accessing signal wavelengths of 1275 - 1800 nm. The parametric amplification process amplifies the seed and simultaneously generates an idler pulse tunable from 2.4 - 4.4 µm. Features
Applications
Thorlabs' Y-Fi™ Femtosecond Optical Parametric Amplifier (OPA) with an integrated The Y-Fi OPA is designed to be a robust and compact single-unit solution. Vertically stacking the Y-Fi HP pump laser and OPA eliminates the need for beam routing on the table, which creates an optical system that is less sensitive to environmental changes. Since the Y-Fi HP fiber laser functions as the base unit of the vertical stack, the compact 464 mm x 304 mm footprint is retained, saving valuable work space on the optical table. The front panel of the Y-Fi OPA features output ports for the signal, depleted pump, and idler beams, as well as a multimode SMA connector that can be connected to a spectrometer for signal monitoring (see the callouts on the schematic in the Specs tab). Each output has a beam height of 5". As a result of its vertical stacking architecture, the Y-Fi OPA also provides full access to the Y-Fi HP pump beam via a bypass port; please see the full Y-Fi Ultrafast Ytterbium Fiber Laser web presentation for detailed specifications. For hands-free operation and long-term reliability, the Y-Fi OPA features a user-friendly GUI that controls parameters such as wavelength, repetition rate, time overlap offset, and pulse compression offset. The included software allows the user to easily switch between the Y-Fi OPA and Y-Fi HP modes of operation; please note that there will not be output from the signal, idler, or depleted pump while in Y-Fi HP mode. Applications to Three-Photon Microscopy ![]() Thorlabs has recently acquired the Y-Fi™ Family of Ultrafast Ytterbium Fiber Lasers from KMLabs and is currently finalizing the compliance requirements for international sale of these items. The information presented in this web presentation reflect current specifications for these items. Additional details, including potential updates to the specifications, will be provided once an internal evaluation of the product line is completed. In the interim, please contact LaserSales@thorlabs.com to learn more about our Y-Fi™ products.
![]() Click to Enlarge The Y-Fi™ OPA features four output ports, which are for the Y-Fi™ HP pump, signal, depleted pump, and idler beams. A multimode SMA connector is also included for signal monitoring. ![]() Click to Enlarge Y-Fi OPA Pulse Energy and Average Power Scaling with Repetition Rate Measured at 1330 nm ![]() Click to Enlarge Y-Fi OPA Pulse Energy and Average Power Scaling with Repetition Rate Measured at 1680 nm Thorlabs has recently acquired the Y-Fi™ Family of Ultrafast Ytterbium Fiber Lasers from KMLabs and is currently finalizing the compliance requirements for international sale of these items. The information presented in this web presentation reflect current specifications for these items. Additional details, including potential updates to the specifications, will be provided once an internal evaluation of the product line is completed. In the interim, please contact LaserSales@thorlabs.com to learn more about our Y-Fi™ products. Pulsed Laser Emission: Power and Energy CalculationsDetermining whether emission from a pulsed laser is compatible with a device or application can require referencing parameters that are not supplied by the laser's manufacturer. When this is the case, the necessary parameters can typically be calculated from the available information. Calculating peak pulse power, average power, pulse energy, and related parameters can be necessary to achieve desired outcomes including:
Pulsed laser radiation parameters are illustrated in Figure 1 and described in the table. For quick reference, a list of equations are provided below. The document available for download provides this information, as well as an introduction to pulsed laser emission, an overview of relationships among the different parameters, and guidance for applying the calculations.
![]() Click to Enlarge Figure 1: Parameters used to describe pulsed laser emission are indicated in the plot (above) and described in the table (below). Pulse energy (E) is the shaded area under the pulse curve. Pulse energy is, equivalently, the area of the diagonally hashed region.
Example Calculation: Is it safe to use a detector with a specified maximum peak optical input power of 75 mW to measure the following pulsed laser emission?
The energy per pulse: seems low, but the peak pulse power is: It is not safe to use the detector to measure this pulsed laser emission, since the peak power of the pulses is >5 orders of magnitude higher than the detector's maximum peak optical input power.
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