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- Title
Relocking and Locking Range Extension of Partially Locked AMLL Cavity Modes with Two Detuned RF Sinusoids.
- Authors
Krishnamoorthy, Shree; Prabhakar, Anil
- Abstract
Actively mode-locked fiber ring lasers (AMLLs) with loss modulators are used to generate approximately 100 ps pulses with 100 MHz repetition. RF detuning around the fundamental frequency, f 0 , causes a loss in phase lock (unlocking) of cavity modes and partial mode locking. Multiple RF inputs are shown, theoretically, to relock and extend the locking range of cavity modes in a detuned partially mode-locked AMLL. A custom-built Yb 3 + -doped AMLL with f 0 = 26 MHz , and operating wavelength of 1064 nm , was used to experimentally verify the theoretical predictions. Two RF sinusoidal signals with constant phase and equal amplitude resulted in an extension of the range by X n = 6.4 kHz in addition to the range R n = 14.34 kHz with single input for the mode n = 10 . An increase in locking range was also observed for higher modes. Pulsewidth reduction to approximately 205 ps from about 2 ns was also observed in the AMLL.
- Subjects
RING lasers; MODE-locked lasers; FIBER lasers; LASER cavity resonators; ELECTROMAGNETIC pulses
- Publication
Photonics, 2023, Vol 10, Issue 7, p735
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics10070735