2.1 Ultrafast solid-state lasers - ETH - the Keller Group

132 2.1.10 Glossary [Ref. p. 134
L g length of laser gain material or grating pair spacing (Table 2.1.9)
l
total saturated amplitude loss coefficient (Table 2.1.10). l includes the output
coupler, all the residual cavity losses and the unsaturated loss of the saturable
absorber.
l out
amplitude loss coefficient of output coupler
l s
amplitude loss coefficient of soliton due to gain filtering and absorber saturation
(2.1.75)
M modulation depth of loss modulator (2.1.33)
M 1 , M 2 , M 3 , . . . different mirrors in laser cavity
M 2 M 2 factor defining the laser beam quality (2.1.3)
Mfast
2 M 2 factor in the “fast” axis, perpendicular to the pn-junction of the diode laser
Mslow
2 M 2 factor in the “slow” axis, parallel to the pn-junction of the diode laser
M s curvature of loss modulation ((2.1.33) and Table 2.1.10)
n
refractive index of a dispersive medium
n 2 nonlinear refractive index (Fig. 2.1.13, (2.1.42))
P
power
P (z,t) pulse power (2.1.24)
P abs
absorbed pump power
P av,out
average output power
q saturable amplitude loss coefficient (i.e. nonsaturable losses not included) (2.1.7)
q 0
unsaturated amplitude loss coefficient or maximal saturable amplitude loss coefficient
(2.1.6)
q p
total absorber loss coefficient which results from the fact that part of the excitation
pulse needs to be absorbed to saturate the absorber ((2.1.11) and (2.1.15))
q s
residual saturable absorber amplitude loss coefficient for a fully saturated ideal
fast absorber with soliton pulses
R(F p,A ) measured nonlinear reflectivity of a SESAM (Fig. 2.1.9)
R(t) impulse response of a saturable absorber mirror (Sect. 2.1.4.2)
R ISA measured nonlinear reflectivity with inverse saturable absorption (ISA) (2.1.81)
R t top intensity reflectivity (Table 2.1.9)
R tot total net reflectivity (2.1.9)
S(ω, τ) spectral interference of a pulse with a frequency-shifted replica (2.1.90)
T time that develops on a time scale of the order of T R (2.1.23)
T g group delay (Table 2.1.7)
T out
intensity transmission of the laser output coupler
T R
cavity round-trip time
t fast time of the order of the pulse duration (2.1.23)
t 0 round-trip time of Fabry–Perot (Table 2.1.9)
t D time shift (2.1.59)
V p
pump volume
v g group velocity (Table 2.1.7)
v p phase velocity (Table 2.1.7)
W 0
beam waist
W 0,G
beam waist of a Gaussian beam
W 0,opt optimized beam waist for efficient diode pumping (2.1.5)
z
pulse propagation distance
z 0 Rayleigh range of a Gaussian beam, i.e. z 0 = π W0 2 /λ
α apex angle of prism (Table 2.1.9)
β angle in prism compressor (Fig. 2.1.16c and Table 2.1.9)
γ A absorber coefficient ((2.1.18), (2.1.35) and Table 2.1.10)
ΔA
change in the pulse envelope
Landolt-Börnstein
New Series VIII/1B1