Multiwavelength interferometry system for the Orion laser facility

Area of Science:

• * Laser-plasma interactions
• * Optical diagnostics
• * High-energy-density physics

Background:

• * The Orion laser facility requires advanced diagnostics for its experiments.
• * Existing interferometry systems may lack broadband achromatic capabilities or flexibility.

Purpose of the Study:

• * To design and test a novel multiwavelength interferometry system for the Orion laser facility.
• * To demonstrate broadband achromatic performance from UV to visible wavelengths.
• * To achieve high-resolution imaging of small features.

Main Methods:

• * Utilized self-path matching Wollaston prisms for interferometry.
• * Incorporated UV-corrected achromatic optics for wavelength flexibility.
• * Employed a 1054 nm Nd:glass probe beam and its harmonics.
• * Integrated the optics package within a ten-inch manipulator for versatile deployment.

Main Results:

• * Demonstrated interferograms at first, second, and fourth harmonics of the probe beam.
• * Confirmed broadband achromatic capability from 263 nm (UV) to 527 nm (visible).
• * Resolved features as small as 5 μm on 15x10 mm objects.
• * Showcased capability at an off-harmonic wavelength for future applications.

Conclusions:

• * The developed multiwavelength interferometry system is effective for the Orion laser facility.
• * The system offers broadband achromatic imaging and high-resolution capabilities.
• * Its compact design allows for flexible deployment within the target chamber.