Generation of arbitrary complex fields with high efficiency and high fidelity by cascaded phase-only modulation...

Area of Science:

• Optics
• Quantum Information Science

Background:

• Precise control of complex optical fields is vital for many applications.
• Current phase-only modulation methods achieve high accuracy but suffer from low light-usage efficiency.

Purpose of the Study:

• To propose a novel cascaded modulation method for generating arbitrary complex optical fields.
• To enhance both the efficiency and fidelity of complex field generation compared to existing techniques.

Main Methods:

• A gradient descent optimization algorithm is employed to minimize a custom cost function.
• The proposed method utilizes a cascaded modulation approach for complex field generation.
• Simulations and experiments were conducted to validate the method's performance.

Main Results:

• The cascaded modulation method achieves significantly higher energy efficiency (e.g., 79.5% for LG01 mode) compared to existing methods.
• High fidelity in complex field generation is maintained, even for intricate patterns.
• Efficiency remains high for complex optical fields, unlike single-pass methods.

Conclusions:

• The proposed cascaded modulation method offers a superior balance of high efficiency and high accuracy for complex optical field generation.
• This technique shows promise for advancing applications in optical manipulation and quantum communication.