../ 上課筆記/ 21-Mar-2026 11:05 - 1_Gaussian beam - phase.pdf 21-Mar-2026 11:05 158K Broadening Mechanisms.pdf 21-Mar-2026 11:05 275K Laser_handout.pdf 21-Mar-2026 11:05 281K Practice probl - HeNe Laser.pdf 21-Mar-2026 11:05 243K