Electronically tuned Ti:sapphire laser

Wada, Satoshi; Akagawa, Koji; Tashiro, Hideo

doi:10.1364/ol.21.000731

Cited by 63 publications

(34 citation statements)

References 7 publications

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“…The high-speed tunable laser was equipped with an AOTF inside its cavity for tuning the wavelength electrically. 31 The AOTF was a piezoelectric device made from a birefringent crystal that alters the diffracted wavelength of incident light by applying suitable radio frequency waves without the need for any mechanical parts. 32 Therefore, the laser could be rapidly tuned from 800 to 940 nm with a typical pulse duration of 10 ps within 1 ms∕wavelength change.…”

Section: Picosecond Laser With High-speed Wavelength Scanning Systemmentioning

confidence: 99%

Fast spectral coherent anti-Stokes Raman scattering microscopy with high-speed tunable picosecond laser

et al. 2013

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We develop a coherent anti-Stokes Raman scattering (CARS) microscopy system equipped with a tunable picosecond laser for high-speed wavelength scanning. An acousto-optic tunable filter (AOTF) is integrated in the laser cavity to enable wavelength scanning by varying the radio frequency waves applied to the AOTF crystal. An end mirror attached on a piezoelectric actuator and a pair of parallel plates driven by galvanometer motors are also introduced into the cavity to compensate for changes in the cavity length during wavelength scanning to allow synchronization with another picosecond laser. We demonstrate fast spectral imaging of 3T3-L1 adipocytes every 5 cm-1 in the Raman spectral region around 2850 cm-1 with an image acquisition time of 120 ms. We also demonstrate fast switching of Raman shifts between 2100 and 2850 cm-1, corresponding to CD2 symmetric stretching and CH2 symmetric stretching vibrations, respectively. The fast-switching CARS images reveal different locations of recrystallized deuterated and nondeuterated stearic acid.

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Section: Picosecond Laser With High-speed Wavelength Scanning Systemmentioning

confidence: 99%

Fast spectral coherent anti-Stokes Raman scattering microscopy with high-speed tunable picosecond laser

et al. 2013

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“…The Ti:sapphire laser used as a pump source was described in a previous report. 9 Through the following improvements, the tuning range was extended compared a͒ Electronic mail: akagawa@postman.riken.go.jp with that in the previous report. First, the correction prism inserted in the laser cavity was changed from a SiO 2 prism to a SF11 prism, in order to obtain a wider range of correction of the deflected angle deviation in the AOTF crystal.…”

Section: ͓S0003-6951͑97͒04610-x͔mentioning

confidence: 97%

“…6 Recently, we have succeeded in introducing an acoustooptic tunable filter ͑AOTF͒ 7,8 into the cavity of a pulsed Ti:sapphire laser in order to achieve direct electronic tuning of lasing wavelengths. 9 This new technology enables rapid, random-access tuning of oscillating wavelengths, since there is no moving mechanism in the cavity. This type of laser source is certainly most suitable for a KTP-OPO system because rapid scanning of signal and idler waves of the OPO can be achieved in the near-infrared region, which is matched to the characteristic infrared absorption of various chemicals and optical fibers.…”

Section: ͓S0003-6951͑97͒04610-x͔mentioning

confidence: 99%

High-speed optical parametric oscillator pumped with an electronically tuned Ti:sapphire laser

Akagawa

Wada

Tashiro

1997

Applied Physics Letters

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High-speed and random-access tuning of output wavelengths was achieved in an optical parametric oscillator pumped with an electronically tuned Ti:sapphire laser, which was fully under computer control. The signal and idler wavelengths in 90° phase-matched KTiOPO4 were scanned without mechanical rotation of crystals or mirrors. Signal waves in the range from 1.06 to 1.31 μm and idler waves in the range from 2.27 to 2.97 μm accessed in random order by setting the pumping wavelengths between 713 and 923 nm.

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“…2 shows the measured absorption spectrum around 780 nm. Here, an electronically tuned Ti:Al 2 O 3 laser was used to obtain the absorption spectrum [20]. Three absorption peaks were observed at 779, 781, and 785 nm, and the maximum absorption coefficient of 2.8 cm −1 was obtained at 785 nm.…”

Section: Pumping Chamber For Tm:yag Rodmentioning

confidence: 99%

128 mJ/Pulse, Laser-Diode-Pumped, Q-Switched Tm:YAG Laser

Yumoto

Saito

Urata³

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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We demonstrated a high-pulse-energy, laser-diodepumped Tm:YAG laser in AO Q-switched operation. In laser experiments, we introduced a composite-type Tm:YAG laser rod with undoped endcaps. The rod was pumped by 785-nm quasicontinuous-wave laser diodes in a side-pumping configuration. To obtain a high energy and high beam quality, we designed a Tm:YAG laser cavity utilizing the thermal lens effect of the laser rod. A Q-switched output energy of 128 mJ at 10 Hz with a pulse width of 160 ns was obtained from the laser oscillator at room temperature, and the slope efficiency reached 14%. A high beam quality in the TEM 00 mode was also realized.Index Terms-Solid lasers, laser cavity resonators, high pulse energy.

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Electronically tuned Ti:sapphire laser

Cited by 63 publications

References 7 publications

Fast spectral coherent anti-Stokes Raman scattering microscopy with high-speed tunable picosecond laser

Fast spectral coherent anti-Stokes Raman scattering microscopy with high-speed tunable picosecond laser

High-speed optical parametric oscillator pumped with an electronically tuned Ti:sapphire laser

128 mJ/Pulse, Laser-Diode-Pumped, Q-Switched Tm:YAG Laser

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