Q-switching passive

The incorporation of Cr" + ions in crystals is presently an active research subject, due to the possibility of realizing new broadly tunable solid state lasers in the infrared, which will operate at room temperature. Moreover, the spectroscopic properties of this ion are particularly useful in the development of saturable absorbers for Q-switching passive devices. At the present time, Cr + YAG is the most common material employed as a passive Q-switch in Nd YAG lasers. This is because the ions provide an adequate absorption cross section at the Nd + laser wavelength (1.06 /um), together with the good chemical, thermal, and mechanical properties of YAG crystals, which are required for stable operation. [Pg.219]

The second category comprises the flash photolysis experiments using the short high power light pulses from Q-switched lasers, furthermore all investigations of time-dependent behavior of excited dye molecules, which play an important role as active material in dye lasers or as saturable absorbers in passive Q-switched giant pulse lasers. [Pg.32]

In the years since 1964, when the first passive Q-switching with organic dyes was accomplished, the use of organic dyes in laser technology has become increasingly important. Some of the most important developments in the laser field would not have been possible without organic dyes, and one can foresee even further possibilities for the use of dyes in laser technology which could be realized in the near future. [Pg.2]

Applications making use of the nonlinear absorption of dyes are passive Q-switching in solid-state lasers, pulse shaping, pulse intensity measurements of high-power ultrashort pulses, optical isolation between amplifier stages of high power solid-state lasers, and pulse width measurements of ultrashort pulses by the two-photon-fluorescence (TPF) method. [Pg.2]

The most important application of the nonlinear absorption characteristics of dye solutions is the so-called passive Q-switching of solid-state lasers, in particular ruby lasers emitting at 694.3 nm and neodymium lasers emitting at 1.064 /tm. [Pg.11]

Peak laser powers of over 500 MW/cm2 are easily obtained with dye solutions as passive Q-switches. [Pg.12]

Until recently a general drawback of this passive Q-switching scheme was the difficulty of obtaining an exact synchronization of the giant pulse with other events in more complex experiments. This difficulty does not exist with active Q-switching in which an electro-optic device, e.g. a Kerr-cell or Pockels-cell, is used instead of a dye cell, and one is able to determine exactly the time at which... [Pg.12]

This technique is known as the passive Q-switch. The dye acts as an absorber for weak light, so that the population of excited atoms or molecules in the active material can increase until its maximum level is reached. The dye cell is in fact a high-speed shutter. [Pg.227]

J. Kong, D.Y Tang, J. Lu, K. Ueda, H, Yagi, T. Yanagitani, Passively Q-switched Yb Y203 ceramic laser with a GaAs output coupler, Opt. Exp, 12, 3560(2004). [Pg.595]

Fig. 9.32 Average output power as a function of the absorbed pump power for the passively Q-switched Yb YAG/Cr" YAG ceramic miniature laser. The inset a shows the output beam profile and transverse beam profile and b shows the measured beam quality factors. Reproduced with permission from [247]. Copyright 2007, American Institute of Physics...

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Degnan JJ (1995) Optimization of passively Q-switched lasers. IEEE J Quantum Electron 31 1890-1901... [Pg.665]

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Lupei V, Lupei A, lonitamanzatu V, Geoigescu S, Domsa F (1983) Combined mechanical-color center passive Q-switching of neodymium lasers. Opt Commun 48 203-206... [Pg.666]

Dascalu T, Pavel N, Lupei V, Philipps G, Beck T, Weber H (1996) Investigation of a passive Q-switched, externally controlled, quasicontinuous or continuous pumped Nd YAG laser. Opt Eng 35 1247-1251... [Pg.666]

Dascalu T, Philipps G, Weber H (1997) Investigation of a Cr YAG passive Q-switch in CW pumped Nd YAG lasers. Opt Laser Technol 29 145-149... [Pg.666]

Omatsu T, Minassian A, Damzen MJ (2009) Passive Q-switching of a diode-side-pumped Nd doped 1.3 jm ceramic YAG bounce laser. Opt Commun 282 4784—4788... [Pg.666]

Li P, Chen XH, Zhang HN, Wang QP (2011) Diode-end-pumped passively Q-switched 1319 nm Nd YAG ceramic laser with a V YAG saturable absorber. Laser Phys 21 1708-1711... [Pg.666]

Omatsu T, Miyamoto K, Okida M, Minassian A, Damzen MJ (2010) 1.3-pm passive Q-switching of a Nd-doped mixed vanadate bounce laser in combination with a V YAG saturable absorber. Appl Phys B Lasers Opt 101 65-70... [Pg.666]

Zhao J, Zhao SZ, li K, Kong EM, Zhang G (2011) C timization of passively Q-switched and mode-locked lasts with Cf YAG saturable absorber. Opt Commun 284 1648-1651... [Pg.666]

Yao BQ, Cui Z, Duan XM, Shen YJ, Wang J, Du YQ (2014) A graphene-based passively Q-switched Ho YAG laser. Chin Phys Lett 31 074202... [Pg.667]

Zhao T, Wang Y, Chen H, Shen D (2014) Graphene passively Q-switched Ho YAG ceramic laser. Appl Phys B Lasers Opt 116 947-950... [Pg.667]

Dong J, Shirakawa A, Ueda K, Yagi H, Yanagitani T, Kaminskii AA (2007) Near-diffraction-limited passively Q-switched Yb Y3Al50i2 ceramic lasers with peak power >150 kW. Appl Phys Lett 90 131105... [Pg.670]

Li JL, Lin D, Zhong LX, Ueda K, Shirakawa A, Musha M et al (2009) Passively Q-switched Nd YAG ceramic microchip laser with azimuthally polarized output. Laser Phys Lett 6 711-... [Pg.673]

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