Mode Locking and Ultrashort Pulses

1972 ◽  
pp. 201-212
Author(s):  
Richard A. Phillips
Keyword(s):  
Ultrashort Pulses ◽  
Mode Locking

scholarly journals Distributed Kerr Lens Mode-Locked Yb:YAG Thin-Disk Oscillator

2022 ◽  
Vol 2022 ◽  
pp. 1-8
Author(s):  
Jinwei Zhang ◽  
Markus Pӧtzlberger ◽  
Qing Wang ◽  
Jonathan Brons ◽  
Marcus Seidel ◽  
...  
Keyword(s):  
High Power ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Laser Cavity ◽  
Mode Locking ◽  
Gain Medium ◽  
Thin Disk ◽  
Narrow Bandwidth ◽  
Cavity Modes ◽  
High Power Output

Ultrafast laser oscillators are indispensable tools for diverse applications in scientific research and industry. When the phases of the longitudinal laser cavity modes are locked, pulses as short as a few femtoseconds can be generated. As most high-power oscillators are based on narrow-bandwidth materials, the achievable duration for high-power output is usually limited. Here, we present a distributed Kerr lens mode-locked Yb:YAG thin-disk oscillator which generates sub-50 fs pulses with spectral widths far broader than the emission bandwidth of the gain medium at full width at half maximum. Simulations were also carried out, indicating good qualitative agreement with the experimental results. Our proof-of-concept study shows that this new mode-locking technique is pulse energy and average power scalable and applicable to other types of gain media, which may lead to new records in the generation of ultrashort pulses.

Ultrashort pulses from a cw dye laser using passive-active mode locking technique

1978 ◽  
Vol 24 (1) ◽  
pp. 41-43 ◽  
Author(s):  
Toshio Kurobori ◽  
Yoshio Cho ◽  
Yukito Matsuo
Keyword(s):  
Ultrashort Pulses ◽  
Mode Locking ◽  
Dye Laser ◽  
Active Mode

Frequency modulation of ultrashort pulses emitted byQ-switched YAG:Nd lasers with active mode locking

1988 ◽  
Vol 18 (5) ◽  
pp. 666-668
Author(s):  
G I Onishchukov ◽  
S D Ryabko ◽  
A A Fomichev ◽  
O I Lavrovskaya ◽  
S R Rustamov
Keyword(s):  
Frequency Modulation ◽  
Ultrashort Pulses ◽  
Mode Locking ◽  
Active Mode

scholarly journals Efficient 1 µm Laser Emission of Czochralski-Grown Nd:LGSB Single Crystal

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2005 ◽  
Author(s):  
Catalina-Alice Brandus ◽  
Stefania Hau ◽  
Alin Broasca ◽  
Madalin Greculeasa ◽  
Flavius-Marian Voicu ◽  
...  
Keyword(s):  
Pump Power ◽  
Output Power ◽  
Laser Emission ◽  
Continuous Wave ◽  
Average Power ◽  
Ultrashort Pulses ◽  
Mode Locking ◽  
Average Output ◽  
Continuous Wave Output Power ◽  
Optical Efficiency

A 5.0-at.% Nd-doped La0.64Gd0.41Sc2.95(BO3)4 (Nd:LGSB) borate laser crystal was successfully grown by the Czochralski method, for the first time to our knowledge. The spectroscopic properties of the grown crystal are discussed and 1 µm laser emission, under end-pumping with a fiber-coupled diode laser at 807 nm, is reported. A c-cut Nd:LGSB medium yielded 1.35 W continuous-wave output power at 0.63 overall optical-to-optical efficiency, with respect to the absorbed pump power, together with the high 0.68 slope efficiency. With an a-cut Nd:LGSB sample, 0.81 W output power at 0.52 optical-to-optical efficiency was obtained. The laser emission performances under quasi-continuous wave pumping are presented as well, for both c-cut and a-cut crystals. Passive Q-switching was investigated with a semiconductor saturable absorber mirror (SESAM). Laser pulses with 2.2 µJ energy and 32.8 ns durations were recorded from a-cut Nd:LGSB. The average output power reached 0.36 W at 1.55 W absorbed pump power. Passive mode-locking with SESAM was achieved in a long Z-type resonator. Ultrashort pulses with 0.19 W average power, 1.63 nJ energy, and 1.43 ps pulse duration, at 118 MHz repetition rate, are demonstrated for the a-cut Nd:LGSB medium.

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