High-power terahertz optical pulse generation with a dual-wavelength harmonically mode-locked Yb:YAG laser

Zhuang, W. Z.; Chang, M. T.; Su, Kuan-Wei; Huang, Kai–Feng; Chen, Yung-Fu

doi:10.1088/1054-660x/23/7/075803

Cited by 10 publications

(3 citation statements)

References 31 publications

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“…A two-dimensional MoS 2 passively Q-switched Yb:YPO 4 laser was developed for generating multi-longitudinal-mode laser with a pulse width of 77 ns and repetition rate up to 856 kHz [6]. Laser pulses with repetition rate of 80.3 GHz and pulse width of 1.54 ps have been generated in a semiconductor saturable absorber mirror (SESAM) mode-locked Yb:YAG laser operating at 1.03 and 1.05 μm [7]. However, the laser wavelength is constrained by the energy levels of gain media.…”

Section: Introductionmentioning

confidence: 99%

Sub-megahertz compact self-pulsed Raman laser

Sun,

Liu,

Zhang

et al. 2024

Phys. Scr.

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Broadband self-pulsed Raman laser operating at sub-megahertz (sub-MHz) has been widely used in optical sensing, high-spectral-resolution lidar, frequency-division multiplexing, and optical communication. However, it is a big challenge for achieving stable self-pulsed Raman laser oscillation in a wide pump power range. Here, we construct a compact Yb:YAG/YVO4 Raman laser for generating broadband self-pulsed laser operating at high repetition rate. The effects of cavity length (LC) and Raman crystal length (LR) on the performance of self-pulsed Raman laser have been investigated. By utilizing a 1.5-mm-thick YVO4 crystal as a Raman crystal, the repetition rate increases dramatically from 62 to 280 kHz when the LC decreases from 10 to 4 mm. Meanwhile, the pulse width of 0.66 μs and peak power of 1.1 W is achieved for the self-pulsed Raman laser with LC = 4 mm. For the 4-mm-long Raman laser cavity constructed with a 2-mm-thick YVO4 crystal, the pump power range enable for self-pulsed Raman laser oscillation extends from 1.8 to 3.9 W, the repetition rate has been further increased from 258 to 467 kHz. While the peak power and pulse width are 0.6 W and 0.98 μs, respectively. The Yb:YAG/YVO4 self-pulsed Raman laser oscillates in broadband multi-longitudinal-mode, the spectral bandwidth is 27.4 nm covering from 1051.1 to 1078.5 nm. The utilization of a tilted 2-mm-thick YVO4 crystal as output coupler to construct compact Yb:YAG/YVO4 self-pulsed Raman laser dramatically expands the pump power range for generating high repetition rate self-pulsed Raman laser. Sub-MHz self-pulsed Raman lasers with a wide spectral bandwidth have potential applications in materials processing, quantum information processing, and optical communications.

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Section: Introductionmentioning

confidence: 99%

Sub-megahertz compact self-pulsed Raman laser

Sun,

Liu,

Zhang

et al. 2024

Phys. Scr.

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“…Among these methods, harmonic mode locking is a promising approach with the advantages of compactness and low cavity losses. In the past few years, harmonically mode-locked operation has been explored in numerous traditional solid-state lasers, such as Nd:YVO 4 lasers, Nd:YLF lasers, and Yb:YAG lasers [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental studies for high-repetition-rate disordered crystal lasers with harmonic self-mode locking

et al. 2016

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A harmonically self-mode-locked Nd:Sr3Y2/(BO3)4 disordered crystal laser with subpicosecond pulse duration is demonstrated. We exploit the damped harmonic oscillator model to numerically verify that the mode spacing of the laser cavity can be modified to be the harmonics of the free spectral range of the Fabry-Perot cavity when the optical length of the laser cavity is close to a commensurate ratio of the optical length of the Fabry-Perot cavity. In experiment, the Fabry-Perot cavity can be formed by the pump facet of the disordered crystal and the front mirror. A 110 GHz single-pulse harmonically mode-locked pulse train with pulse duration of 857 fs is experimentally achieved under optical lengths of 27.19 and 4.08 mm for the laser cavity and Fabry-Perot cavity respectively, corresponding to a fractional number of 20/3. A maximum output power of 162 mW is obtained at an incident pump power of 3.1 W.

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“…In addition, dual-wavelength synchronous ultrashort pulse source has versatile applications including microwave and terahertz radiation generation, ultrahigh repetition rate pulses and supercontinuum generation, ultrafast pump-probe technique [13][14][15]. To date, both conventional soliton dual-wavelength and DS dual-wavelength synchronously mode-locking in a single cavity have been implemented in a variety of lasers by different means.…”

Section: Introductionmentioning

confidence: 99%

Dissipative soliton and synchronously dual-wavelength mode-locking Yb:YSO lasers

et al. 2015

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We experimentally demonstrate the dissipative soliton mode-locking operation of a Yb:YSO laser by using an all-normal dispersion cavity. Strongly chirped pulses are obtained with pulse duration of 9.3 ps at a repetition rate of 113.4 MHz. The central wavelength is 1082 nm with 3.1 nm FWHM bandwidth. A dual-wavelength synchronously mode-locking operation at central wavelengths of 1059.2 nm and 1082.2 nm is also reported. Stable mode-locked pulses are achieved with pulse duration of 10 ps and total average output power of 164 mW. Periodic ultrashort beat pulses with pulse duration of 169 fs at an ultrahigh repetition rate of 1.4 THz can be distinctly observed from the measured autocorrelation trace. To our knowledge, this is the first demonstration of dual-wavelength synchronously mode-locking operation from a Yb:YSO laser.

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High-power terahertz optical pulse generation with a dual-wavelength harmonically mode-locked Yb:YAG laser

Cited by 10 publications

References 31 publications

Sub-megahertz compact self-pulsed Raman laser

Sub-megahertz compact self-pulsed Raman laser

Theoretical and experimental studies for high-repetition-rate disordered crystal lasers with harmonic self-mode locking

Dissipative soliton and synchronously dual-wavelength mode-locking Yb:YSO lasers

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