2015
DOI: 10.1088/1054-660x/25/4/045802
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Wideband tunable graphene-based passively Q-switched Tm:YAP laser

Abstract: We investigate the characteristics of a graphene Q-switched Tm:YAP laser operating in a wavelength tunable regime. By using a volume Bragg grating (VBG) as the intra-cavity wavelength selection element, and graphene as the saturable absorber (SA), a tunable Q-switched Tm:YAP laser was realized with a continuous tunable wavelength range from 1965.2 to 2000.7 nm. Through careful alignment of the VBG and the graphene SA in coordination, stable pulsed laser operations were achieved at this wavelength range. A maxi… Show more

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Cited by 23 publications
(14 citation statements)
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“…Ultra-broadband SAs in particular can extend Q-switch operation wavelength to the mid-infrared band. So far, SAs such as semiconductor saturable absorber mirrors (SESAMs) [1][2][3], carbon nanotubes [4][5][6][7], graphene [8][9][10][11][12][13][14][15][16][17], and topological insulators [18,19] have been adopted for passive Q-switching and mode-locking operations. An excellent SA should possess the properties of moderate saturation intensity, high damage threshold, ultrafast recovery time, and broadband saturable absorption.…”
Section: Introductionmentioning
confidence: 99%
“…Ultra-broadband SAs in particular can extend Q-switch operation wavelength to the mid-infrared band. So far, SAs such as semiconductor saturable absorber mirrors (SESAMs) [1][2][3], carbon nanotubes [4][5][6][7], graphene [8][9][10][11][12][13][14][15][16][17], and topological insulators [18,19] have been adopted for passive Q-switching and mode-locking operations. An excellent SA should possess the properties of moderate saturation intensity, high damage threshold, ultrafast recovery time, and broadband saturable absorption.…”
Section: Introductionmentioning
confidence: 99%
“…In this context, to control the spectral output of the optical parametric oscillator (OPO), which is based on Vernier spectral filtering in doubly resonant cavities [1], we also need a single longitudinal mode (SLM) pumping laser. Pulsed, tunable 2 µm sources laser have been developed [3,4] but they require complex alignment or do not have narrow line-width emission and they exhibit relatively long pulses. For this purpose we fisrt built a CW 2 µm Tm:YAP laser with a transversally chirped volume Bragg grating (TC-VBG) to narrow the spectrum and perform wavelength tuning [5].…”
Section: Contextmentioning
confidence: 99%
“…• Wideband tunable graphene-based passively Q-switched Tm:YAP laser-the characteristics of a graphene Q-switched Tm:YAP laser operating in a wavelength tunable regime are investigated [49].…”
Section: Novel Laser Materials and Lasersmentioning
confidence: 99%