Agilent/Keysight 10715A

The Agilent/Keysight 10715A is a differential interferometer engineered for high-precision laser interferometry and differential measurements. This single-axis instrument utilizes a common mode optical path to minimize deadpath effects and eliminate thermal drift, delivering measurement resolution double that of conventional linear or single-beam interferometers.

– Technical Specifications

• Fundamental optical resolution: λ/4 (158.2 nm, 6.2 µin)
• System resolution with 32× electronic extension: λ/128 (5 nm, 0.2 µin)
• System resolution with 256× electronic extension: λ/1024 (0.62 nm, 0.024 µin)
• Maximum beam size: 6 mm
• Beam separation: 12.7 mm (0.5 in)
• Weight: 504 g (1 lb 1.8 oz)

– Key Features

• Differential measurement configuration eliminates common-mode thermal effects
• Included components: three retroreflectors, one beam bender, two quarter-wave plates
• Requires user-supplied reference and measurement plane mirrors (e.g., Keysight 10724A)
• Option 001 available for beam-turning configurations
• Typical mount: 10711A

– Typical Applications

• High-accuracy differential measurements requiring nanometer-scale resolution
• Precision laser interferometry positioning systems
• Applications demanding thermal stability and minimal measurement deadpath

– Compatibility & Integration

The 10715A integrates with the Keysight laser interferometer positioning ecosystem, compatible with the 10711A mount and 10724A plane mirror reflector. It functions alongside other Keysight differential and linear interferometers including the 10716A, 10719A, 10721A, 10722A, 10723A, and 10735A.