t_funcs.exp_rise
t_funcs.exp_rise(index)Return a rising-exponential pulse time function.
ampl * exp((t - off) / tau) up to off, then zero: the time reverse of :func:exp_decay, the envelope of a photon that a sink absorbs perfectly.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| index | int | Integer suffix used to look up parameters in args. | required |
Returns
| Name | Type | Description |
|---|---|---|
| TFunc | Callable f(t, args) reading ampl_{index}, off_{index} and |
|
| TFunc | tau_{index} (the 1/e time of the amplitude) from args. |