ASML SERV.454.71153 Beam Steering Laser BSM Mirror – Precision Optical Steering for Lithography

The ASML SERV.454.71153 is a beam steering laser BSM (Beam Steering Mirror) component designed for ASML lithography systems. This precision optical element directs and positions the laser beam with high accuracy, supporting critical alignment, metrology, and exposure functions in advanced semiconductor manufacturing. Its advanced design ensures stable beam positioning and minimal optical distortion.

Overview of the Beam Steering Mirror

The BSM mirror is a key component of the laser beam delivery and control system. It provides fast and accurate steering of the laser beam, enabling precise positioning on the reticle and wafer. The mirror is mounted on a precision gimbal or piezoelectric actuator system for rapid response and high resolution.

Technical Specifications

• Part Number: SERV.454.71153

• Component Type: Beam steering mirror (BSM)

• Optical Material: Fused silica or silicon

• Coating Type: Multilayer dielectric

• Reflectivity: > 99%

• Surface Figure: λ/10 at 633 nm

• Actuation Type: Piezoelectric / voice coil

• Angular Resolution: < 0.1 µrad

• Operating Temperature: 20 °C ± 0.5 °C

• Dimensions: 100 mm x 80 mm x 60 mm

• Weight: 1.0 kg

Optical Performance

The BSM mirror provides high reflectivity with minimal wavefront distortion, ensuring the laser beam maintains its quality after steering.

Application Areas

This mirror is used in ASML TWINSCAN systems, alignment systems, and metrology systems.

Installation and Calibration

The mirror is installed in the optical column and calibrated using specialized alignment procedures.

Maintenance

Cleaning should be performed using optical cleaning methods.

Conclusion

The ASML SERV.454.71153 beam steering mirror provides precise optical steering essential for lithography system performance.