Transverse mode locking of different frequency-degenerate families based on annular beam pumping

2021 ◽  
Author(s):  
Shunqin Zhang ◽  
Zenan Fu ◽  
Linquan Lai ◽  
Fuqiang Jia ◽  
Dun Qiao ◽  
...  
Keyword(s):  
Transverse Mode ◽  
Mode Locking ◽  
Annular Beam

scholarly journals Modal reconstruction of transverse mode-locked laser beams

2020 ◽  
Vol 126 (10) ◽  
Author(s):  
Florian Schepers ◽  
Tim Hellwig ◽  
Carsten Fallnich
Keyword(s):  
Power Distribution ◽  
Oscillation Amplitude ◽  
Transverse Mode ◽  
Mode Locking ◽  
Orthogonal Direction ◽  
Modal Power ◽  
Gradient Descent Algorithm ◽  
Stochastic Parallel Gradient Descent ◽  
Spatio Temporal ◽  
Mode Order

Abstract Transverse mode-locking in an end-pumped solid state laser by amplitude modulation with an acousto-optic modulator was investigated. Using the stochastic parallel gradient descent algorithm the modal power coefficients and the modal phases of the transverse mode-locked (TML) laser beam were reconstructed from the measured spatial and spatio-temporal intensity distributions, respectively. The distribution of the reconstructed modal power coefficients revealed that the average mode order of the transverse mode-locking process could be increased by a factor of about 8 compared to previous works, corresponding to an increase in the normalized oscillation amplitude by a factor of about 3. Furthermore, we found that besides a non-Poissonian modal power distribution, strong aberrations of the modal phases occurred in the experiment, resulting in a deformation of the oscillating spot. Additionally, we demonstrated the generation of up to four spots oscillating simultaneously on parallel traces by operating the TML laser on a higher mode order in the orthogonal direction to the transverse mode-locking process. TML lasers are of interest, e.g., for beam scanning purposes, as they have the potential to enable spot resolving rates in the multi-GHz regime.

Transverse mode locking

1968 ◽  
Vol 4 (6) ◽  
pp. 420-422 ◽  
Author(s):  
D. Auston
Keyword(s):  
Transverse Mode ◽  
Mode Locking

Dual-wavelength generation at the transverse mode locking in a diode-end-pumped passively Q-switched Nd:YLF/Cr4+:YAG laser

2017 ◽  
Vol 44 (1) ◽  
pp. 1-4 ◽  
Author(s):  
V. V. Bezotosnyi ◽  
M. V. Gorbunkov ◽  
A. L. Koromyslov ◽  
V. F. Pevtsov ◽  
Yu. M. Popov ◽  
...  
Keyword(s):  
Transverse Mode ◽  
Mode Locking ◽  
Dual Wavelength ◽  
Yag Laser

Observation of spectral modulation coupled with broadband transverse-mode-locking in an Yb:CALGO frequency-degenerate cavity

2019 ◽  
Vol 17 (3) ◽  
pp. 031404 ◽  
Author(s):  
Yijie Shen Yijie Shen ◽  
Zhensong Wan Zhensong Wan ◽  
Xing Fu Xing Fu ◽  
Mali Gong Mali Gong
Keyword(s):  
Transverse Mode ◽  
Mode Locking ◽  
Spectral Modulation

Towards the transverse mode-locking of oxide-confined VCSELs

2012 ◽  
Vol 285 (20) ◽  
pp. 4117-4119
Author(s):  
Botao Zhang ◽  
David W. Snoke ◽  
Albert P. Heberle
Keyword(s):  
Transverse Mode ◽  
Mode Locking

Transverse mode locking of Stokes radiation in diode end-pumped Nd:YVO4 laser passively Q-switched by Cr4+:YAG

2016 ◽  
Vol 43 (6) ◽  
pp. 203-206 ◽  
Author(s):  
V. V. Bezotosnyi ◽  
M. V. Gorbunkov ◽  
V. I. Dashkevich ◽  
A. L. Koromyslov ◽  
V. A. Orlovich ◽  
...  
Keyword(s):  
Transverse Mode ◽  
Mode Locking ◽  
Stokes Radiation
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