Let $S$ be a fixed hyperbolic surface with genus $g$ and $n$ punctures. Given any pseudo-Anosov map $f$ on $S$ (with stretch factor $\lambda$) with stable and unstable measured foliations $\mu^s$ and $\mu^u$ respectively. Given any simple closed curve $a$ let $I(\mu^s(a))=min\{\mu^s(\alpha): \alpha \text{ is in the homotopy class of }a \}$ where $\mu^s(a)$ is the length of $a$ with respect to the measure $\mu^s$.


My question is: does there exists $\epsilon>0$ (may depend on $g,n$) such that given any pseudo-Anosov 
map $f$ on $S$, there exists a simple closed curve $a$ such that $I(\mu^s(a))>\epsilon$. 


PS: I have used the notations of the book "A primer on mapping class group" by Farb and Margalit. See Lemma 14.22 and Theorem 14.23. 



Length of a simple closed curve under Pseudo-Anosov maps
To answer the main question as well as the question in the comments, for every simply closed curve $a$ we have $I(\mu^s(a)) \in (0,\infty)$, and every $n$ we have $I(\mu^s(f^n(a))) = \lambda^{-n} I(\mu^s(a))$. It follows that $I(\mu^s(f^n(a)))$ limits to $0$ as $n \to+\infty$ and to $+\infty$ as $n \to -\infty$. So there are no positive upper or lower bounds on $I(\mu^s(a))$ as $a$ varies over all simple closed curves.


