Sub-pm linewidth, high pulse energy, high beam quality microsecond-pulse Ti:sapphire laser at 766.699â
nm.
Opt Express
; 31(10): 16118-16126, 2023 May 08.
Article
in En
| MEDLINE
| ID: mdl-37157697
ABSTRACT
In this letter, a sub-pm linewidth, high pulse energy and high beam quality microsecond-pulse 766.699â
nm Tisapphire laser pumped by a frequency-doubled NdYAG laser is demonstrated. At an incident pump energy of 824 mJ, the maximum output energy of 132.5 mJ at 766.699â
nm with linewidth of 0.66 pm and a pulse width of 100 µs is achieved at a repetition rate of 5â
Hz. To the best of our knowledge, this is the highest pulse energy at 766.699â
nm with pulse width of hundred micro-seconds for a Tisapphire laser. The beam quality factor M2 is measured to be 1.21. It could be precisely tuned from 766.623 to 766.755â
nm with a tuning resolution of 0.8 pm. The wavelength stability is measured to be less than ±0.7 pm over 30 min. The sub-pm linewidth, high pulse energy and high beam quality Tisapphire laser at 766.699â
nm can be used to create a polychromatic laser guide star together with a home-made 589â
nm laser in the mesospheric sodium and potassium layer for the tip-tilt correction resulting in the near-diffraction limited imagery on a large telescope.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2023
Type:
Article